KeyShot Forum

Technical discussions => General discussion => Topic started by: annamaria on April 09, 2013, 03:14:36 PM

Title: Brushed Metal Jewelry
Post by: annamaria on April 09, 2013, 03:14:36 PM
Hey Everybody,

For 3 days i'm with the dillema of brushed metals.

This is what i'm trying to achieve.

(http://www.meisterschmuck.com/sites/meisterschmuck.com/files/styles/product_detail_large/public/images/products/30-w.jpg)

(http://www.meisterschmuck.com/sites/meisterschmuck.com/files/styles/product_detail_large/public/images/products/33-w.jpg)

I tired brushed textures as bump and as textures, i did everything, mine looks just "computer generated and not real.

Can somebody help me or show me how i can achieve this with keyshot? Me and my team wants to buy keyshot because it's easy to use, and it's fast. We will also going to get hdri light studio. We tried demo's of everything and i can't find any tutorial that can give me that results.

It's really important to us to have that same type of results, and not "oke results".

Is this possible with keyshot ? and how do i achieve this. We are on point of buying it, but we are waiting for responce from keyshot crew and you guys.(about this brushed rings)

There is also bunkspeed pro, which we did not like (the work flow).

Thanks in advance guys! I can't wait to get this results.


Title: Re: Brushed Metal Jewelry
Post by: Ed on April 09, 2013, 03:32:07 PM
Can you post an image of your KeyShot renders?  Can you post the BIP?

It would be easier to help knowing your starting point.

Ed
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 09, 2013, 03:39:15 PM
Thanks ed for your fast Reply.

(http://img836.imageshack.us/img836/6650/renderkw.jpg)
Title: Re: Brushed Metal Jewelry
Post by: KeyShot on April 09, 2013, 04:10:08 PM
I think you are pretty close. Perhaps reduce the scale (size) of the bumpmap, and change the lighting environment to show more reflection lines. You can also add a bit of depth of field to match the product images.
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 09, 2013, 04:33:14 PM
Quote from: KeyShot on April 09, 2013, 04:10:08 PM
I think you are pretty close. Perhaps reduce the scale (size) of the bumpmap, and change the lighting environment to show more reflection lines. You can also add a bit of depth of field to match the product images.

So it is possible to achieve with keyshot the rings i post for reference? I don't want to get into maxwell or vray for just brushed metals. All we need is to have high end realistic brushed juwelry.

I also did some reading on maxwell and vray, they were using different layers with different textures ect...trying to do the same with keyshot.

My render is not bad and looks pretty close, but it's artifical. When i look at the pics i post, i want to buy those rings, that's how mm they look.

cheers
Title: Re: Brushed Metal Jewelry
Post by: guest84672 on April 09, 2013, 06:13:09 PM
As Henrik said, reduce the scale of the textures, and change the lighting. You are getting close.
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 10, 2013, 10:16:40 AM
annamaria - I agree, you're pretty close to the reference images.  I suggest you make the changes others have recommended here, then render in the same position and scale as your reference image.  Post a composition of your ring and the reference image side-by-side.  That way we can see the both rings in the same pose, make a comparison, and make further recommendations.

When you say your result does not look real, can you describe further what you want to improve?  Is it the reflections?  The depth of the brush?  The highlights?  The metal color?

Ed
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 10, 2013, 01:40:57 PM
Quote from: Ed on April 10, 2013, 10:16:40 AM
annamaria - I agree, you're pretty close to the reference images.  I suggest you make the changes others have recommended here, then render in the same position and scale as your reference image.  Post a composition of your ring and the reference image side-by-side.  That way we can see the both rings in the same pose, make a comparison, and make further recommendations.

When you say your result does not look real, can you describe further what you want to improve?  Is it the reflections?  The depth of the brush?  The highlights?  The metal color?

Ed

Thanks all for your reply and suggestions.

Ed that's the problem, i don't even know what it is. We just want it to look exactly as in the pictures shown. I can send the 3d model if somebody has time to help. I will post an update.

It's so commercial and yummy looking.

An other example is this one. If we could do renders like this ooh god :p

(http://www.christianbauer.de/uploadimages/gallery/1330343193_big.png)
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 10, 2013, 02:02:35 PM
annamaria  - Can you post the obj model?

In my humble opinion, part of the issue is you want to achieve a look that is not photo-real, using a render program that is photo-real.  I see that style of image on many jewelry web sites and catalogs, and it looks fake to me.  And usually it's the high-end jewelers that go for that look.  Maybe that's called "commercial" :)  To me it looks like a washed-out illustration, not a photo.  Plus, the diamonds are black & white and have no life.

My personal preferences aside, if you can post the obj file I think myself and others can have a go at it.  It may take some photo shop work to get there, because the images on the high end jewelry sites are not straight out of the camera either.

Ed
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 10, 2013, 02:16:13 PM
Hi Ed, Indeed it looks just like u described. To a trained Eye like yours it looks different then to the clients.

Here is the link of the file i used in keyshot.

http://rapidgator.net/file/24c5fb65a07e824c15c01b532f5d5951/Ring_for_Ed.stp.html (http://rapidgator.net/file/24c5fb65a07e824c15c01b532f5d5951/Ring_for_Ed.stp.html)

I'm also testing the Burn and Dodge tool in photoshop to create highlights to see if i can get closer.

thanks in advance
anna


Here is the file i'm trying to get the brushed look on it.



Quote from: Ed on April 10, 2013, 02:02:35 PM
annamaria  - Can you post the obj model?

In my humble opinion, part of the issue is you want to achieve a look that is not photo-real, using a render program that is photo-real.  I see that style of image on many jewelry web sites and catalogs, and it looks fake to me.  And usually it's the high-end jewelers that go for that look.  Maybe that's called "commercial" :)  To me it looks like a washed-out illustration, not a photo.  Plus, the diamonds are black & white and have no life.

My personal preferences aside, if you can post the obj file I think myself and others can have a go at it.  It may take some photo shop work to get there, because the images on the high end jewelry sites are not straight out of the camera either.

Ed
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 10, 2013, 03:16:40 PM
This is what i'm getting, it looks like it's drawn with pencil lol.

I enhanced the diamonds in photoshop. (sharpened them and blended over the layers)


Cheers. I feel really dumb, as i'm on this ring for over 15 hours trying to get the above results.

Title: Re: Brushed Metal Jewelry
Post by: Arnaud on April 11, 2013, 02:41:59 PM
Hi, interesting post. Here are an attempt on a similar model. Any comment would be appreciated.

(model available, let me know)
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 11, 2013, 03:12:12 PM
Thanks for your Entry!

How do you seperate your surface with the inside?

Also you see the renders look more "industrial" (still better then mine ofcourse)

Do you mind sharing your bip file. (what hdri u used)? so i can play arround?

Today i have been on keyshot for 12 hours, on different rings, i cant get like the shown image. I can't give up because i don't have a choice, it's almost summer, wedding season is opening, and we don't have our rings ready.

We would be happy to pay anyone if they could setup a scene for it? :(

Pff feel so lost!

Cheers
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 11, 2013, 03:37:39 PM
Quote from: Arnaud on April 11, 2013, 02:41:59 PM
Hi, interesting post. Here are an attempt on a similar model. Any comment would be appreciated.

(model available, let me know)

I forgot to quote you! :p
Title: Re: Brushed Metal Jewelry
Post by: TpwUK on April 11, 2013, 06:09:59 PM
Try this material and see if it helps

Martin
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 11, 2013, 06:48:50 PM
annamaria -

On my ring models I assign separate materials for the ring interior and exteriors (this must be done inside your modeling program).

Even if the ring interior and exterior are made from the same metal, I still make the ring model with two materials.  This allows more control.  For example, I may have a white gold exterior and interior, but because I can assign each a different material in KeyShot, I can increase the roughness slightly (for example) to blur and soften the reflections on the ring interior only (or vice versa)

Ed
Title: Re: Brushed Metal Jewelry
Post by: Arnaud on April 12, 2013, 12:15:21 AM
annamaria

I used Rhino / Rhinogold for modelling. The external surface has been spitted in 2 separate surfaces to apply the brushed texture on the central area

HDRI is "studio 008" found on Deviant Art. Works fine for jewellery.

I can share the model in Rhino / or BIP format. Let me know.
Title: Re: Brushed Metal Jewelry
Post by: Arnaud on April 12, 2013, 09:41:16 AM
here is the ksp package
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 12, 2013, 11:57:53 AM
Quote from: TpwUK on April 11, 2013, 06:09:59 PM
Try this material and see if it helps

Martin

thanks for your material TP. I also tried the same type with different brushed texutres i found online. I still don't get the way it looks there. I think it must be the lighting...
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 12, 2013, 11:59:10 AM
Quote from: Ed on April 11, 2013, 06:48:50 PM
annamaria -

On my ring models I assign separate materials for the ring interior and exteriors (this must be done inside your modeling program).

Even if the ring interior and exterior are made from the same metal, I still make the ring model with two materials.  This allows more control.  For example, I may have a white gold exterior and interior, but because I can assign each a different material in KeyShot, I can increase the roughness slightly (for example) to blur and soften the reflections on the ring interior only (or vice versa)

Ed

Thanks Ed, indeed i forgot to seperate the surfaces, i'm still learning rhino. I'm still suffering for the render. I will switch 3 days to maxwell demo experiment then compare.
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 12, 2013, 12:00:39 PM
Quote from: Arnaud on April 12, 2013, 09:41:16 AM
here is the ksp package

Hi Arnaud, Thanks for your help! I will open and play arround and also use it to test in other renderers.
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 13, 2013, 09:43:16 AM
annamaria -

I tried one of my ring models here.  Compared to your "penciled" image, is this the direction you want to go?

Ed
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 13, 2013, 01:56:28 PM
Quote from: Ed on April 13, 2013, 09:43:16 AM
annamaria -

I tried one of my ring models here.  Compared to your "penciled" image, is this the direction you want to go?

Ed

Wow, Yes we are getting defenetly closer. No idea how u achieved it. Can i have the bip or some direction how to get there?
Ps: Is this a keyshot standard hdri?

Thanks!
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 13, 2013, 09:31:45 PM
Here are the essentials from my render for the brushed rings with gold stripe in my earlier post:

Brushed Material: Platinum polished.
Color: R254 G254 B255
Roughness: 0.02
Add a texture (normal) map: Brushed Normal.jpg
Check: Normal Map
Texture: Scale: 0.35
UV Coordinates (may want to try Box Map depending on the model)
Bump Height: 1
Check Repeat.

Environment: studio008.hdz
Contrast: 1
Brightness: 0.16
Size: 200
Height: -0.5
Rotation: 88
Fine tune as needed using Tilt and/or Pins in the KeyShot HDR Editor.

Camera:
Focal Length: 60
Add a small amount of Depth of Field as desired.

In Photo Shop experiment with the Curves adjustment if the ring has too much contrast or is too dark.

Ed
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 14, 2013, 05:33:10 AM
Okay, I just had to try something too.

note: I focussed on rendering the metal part of the ring only. The HDRI should be tweaked (or switched entirely...) for the gems to pop.

What I find to work very well is to start from a fully white blank HDRI (RGB 0,0,0; intensity @ 0 stops) and then add KeyShot pins with negative intensity in blend mode to get sharp reflections and shading in the ring.

Dries
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 14, 2013, 06:13:58 AM
Slightly more subtle brush effect on the outer surface.

Dries
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 14, 2013, 07:30:48 AM
I decided to give the diamonds some more love. Actually, just increasing the ray bounces to around 24 already made them appear much more lively.
Also some DOF was added.

I rendered the image in one shot (both metal and diamonds in same rendering).
I cut out the diamonds with a flat pass and made some color and curve adjustments in PS for the ring and diamonds.

Is this coming closer to what you want?

Dries
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 14, 2013, 08:59:06 AM
Quote from: DriesV on April 14, 2013, 07:30:48 AM
I decided to give the diamonds some more love. Actually, just increasing the ray bounces to around 24 already made them appear much more lively.
Also some DOF was added.

I rendered the image in one shot (both metal and diamonds in same rendering).
I cut out the diamonds with a flat pass and made some color and curve adjustments in PS for the ring and diamonds.

Is this coming closer to what you want?

Dries

Hey Dries,

Thanks for all your effort to show the screenshot of the hdri and your rings.

The look we are trying to achieve is this look. Look at all the rings they have in 80% exactly same look. i can't explain or understand what that look is.

We tried with maxwell,keyshot and vray, and we get always same type of look. A it's metallic industrial Or B it's cartonisch or Pencil style.

Here are the pictures.

http://www.meisterschmuck.com/en/produkte/trauringe/phantastics

We are hopeless. We are not lazy or anything, we just bought maxwell vtc course learned maxwell, but still we can't close to this.

Everything aside, we love keyshot, it's workflow beats everything. It's over 2 weeks, i'm doing nothing but rendering with all softwares, jumping from one to an other. ect ect trying to find something that works and buy that render engine.

:(
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 14, 2013, 11:20:26 AM
I think you won't be getting such images in a 1-click rendering.
Also, looking at the images more closely, f.i. DOF in most of the multiple ring  (http://www.meisterschmuck.com/sites/meisterschmuck.com/files/styles/product_detail_large/public/images/products/33-w.jpg) images doesn't make sense (in a physical way).
That linked image has fairly shallow DOF. Yet, both rings' 'facades' are in focus, while the ring with stones is clearly closer to the camera. This is impossible to achieve in reality. Also, how on earth can that logo be captured so sharply? ???
You'd have a hard time matching those exact lighting patterns in one shot too...

I suspect all of those images have seen a LOT of post processing. I'm not even sure if they are renderings. They could well be entirely crafted in Photoshop. There's no way to know, really. :)
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 14, 2013, 11:26:54 AM
Quote from: DriesV on April 14, 2013, 11:20:26 AM
I think you won't be getting such images in a 1-click rendering.
Also, looking at the images more closely, f.i. DOF in most of the multiple ring  (http://www.meisterschmuck.com/sites/meisterschmuck.com/files/styles/product_detail_large/public/images/products/33-w.jpg) images doesn't make sense (in a physical way).
That linked image has fairly shallow DOF. Yet, both rings' 'facades' are in focus, while the ring with stones is clearly closer to the camera. This is impossible to achieve in reality. Also, how on earth can that logo be captured so sharply? ???
You'd have a hard time matching those exact lighting patterns in one shot too...

I suspect all of those images have seen a LOT of post processing. I'm not even sure if they are renderings. They could well be entirely crafted in Photoshop. There's no way to know, really. :)

Yes you are 100% correct. but what i'm after at is the "material on the metal". The way it looks. There is defensively some hardcore postwork done in the pictures. I'm just speechless why i can't achieve that metal look, that feeling. That charming feeling.

I guess an other German engineering that can not be explained? :D

Title: Re: Brushed Metal Jewelry
Post by: Ed on April 14, 2013, 11:39:18 AM
I agree.  You won't get that look directly out of any render program because it involves post-processing.

I picked an image from the referenced jewelry web site and looked at it using the PS color picker.  I would say they desaturated the image, followed by a Curves adjustment.

I tried this on my previous render paying attention to the color value of the dark reflections and the amount of blown-out areas (see image below).

Of course if the ring has colored metal or stones, those should be rendered using a clown pass so you can adjust those details independently of the ring shank in PS. Notice how my ring below on the left has the gold desaturated as well because I applied the post processing to the entire image.  I also lost the ground shadow as a result, but that can also be prevented using render passes.

Less industrial and more "charming" now? :)

Ed

Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 14, 2013, 03:59:04 PM
Quote from: Ed on April 14, 2013, 11:39:18 AM
I agree.  You won't get that look directly out of any render program because it involves post-processing.

I picked an image from the referenced jewelry web site and looked at it using the PS color picker.  I would say they desaturated the image, followed by a Curves adjustment.

I tried this on my previous render paying attention to the color value of the dark reflections and the amount of blown-out areas (see image below).

Of course if the ring has colored metal or stones, those should be rendered using a clown pass so you can adjust those details independently of the ring shank in PS. Notice how my ring below on the left has the gold desaturated as well because I applied the post processing to the entire image.  I also lost the ground shadow as a result, but that can also be prevented using render passes.

Less industrial and more "charming" now? :)

Ed

Yes it's getting better. I have a feeling they are using a texture on the texure map itself too, not only as a bump map. It seems nothing special for those render guys  as almost all german wedidng band manifacturers have that style.

This is an other example (http://www.123gold.nl/images/nl/trauring_marken_bestgold24.jpg)



I will start experimenting now.
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 14, 2013, 04:17:05 PM
I have experimented with an image (brushed) texture in conjunction with a normal map (brushed) before.  It came out looking more artificial, but that technique may work well for your project.

I'm convinced you can get the results you need with KeyShot and a little post processing.  So here's my final version of the Non-Industrial Euro Jewelry Look post process below:

It seems every jewelry brand has established their own style of photography, so I wouldn't necessarily attempt to copy your competitors exactly.

Show us your latest result after you experiment some more :)

Ed
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 15, 2013, 05:26:46 AM
Another try. ;)

It's not a wedding ring, but the same principles apply. :D

First image is rendering straight out of KeyShot.
Second image is same image, but after post work in Photoshop (curve adjustments, desaturated, blended layers...).

Dries
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 15, 2013, 05:29:55 AM
Ed en Dries, thanks both for your all help. I think now it's up to me to go and experiment. I will post an update once i have a progress.!

Thanks again and lets hope for an amazing anna shot :)

Cheers!
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 15, 2013, 06:09:14 AM
I tweakeed the texture scale a bit in KeyShot.

Dries
Title: Re: Brushed Metal Jewelry
Post by: Despot on April 15, 2013, 07:23:07 AM
I can tell you now, they are not renderings - I would wager they are post-processed photography...

J
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 15, 2013, 09:30:53 AM
wow thank you all of you for your support! I'm still not there, i need to practise...:(
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 15, 2013, 09:35:59 AM
Quote from: biomechanic on April 15, 2013, 07:23:07 AM
I can tell you now, they are not renderings - I would wager they are post-processed photography...

J

The last big one seems indeed photography, but those "meister rings" seems renders no? cuz of the some reflection i see. And normally we should be able to achieve those results in keyshot rendering?

Gr Anna
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 15, 2013, 11:34:56 PM
Here is the KeyShot package for that metal piece.
Download (https://docs.google.com/file/d/0Bw6BI0tv_sN8YWJPODJ6SkVyRTg/edit?usp=sharing)

Dries
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 16, 2013, 12:40:32 AM
The same material, tweaked a bit and applied to one of our parts. It's not a piece of jewelry, but you get the point! ;)

Dries
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 16, 2013, 01:53:23 AM
Same scene, exactly the same materials, same HDRI, BUT different lighting orientation (rotation/height).
Just to show that lighting can have a DRAMATIC effect on the appearance and visual qualities of metals. ;)

EDIT: second image >> Same HDRI settings as first image, but tweaked the material of the main body a bit.

Dries
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 16, 2013, 04:39:25 AM
Thanks Dries!

Now it's up to me you guys did enough! I'm now convinced that it's all about the lighting. Will have to sit and study lighting better.

Cheers
Title: Re: Brushed Metal Jewelry
Post by: edwardo on April 17, 2013, 03:36:41 AM
Mr biomechanic is dead right - these are photographs, cropped and superimposed onto a photoshop canvas
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 17, 2013, 07:31:30 AM
Quote from: edunabie on April 17, 2013, 03:36:41 AM
Mr biomechanic is dead right - these are photographs, cropped and superimposed onto a photoshop canvas

I checked many jewelry photographs, wedding bands ect.."meister ringen" images are 3d rendered. you can see it for your self, google , u will see "photographs just look different" and there is no way u can "go from the photography to this high end pictures.

(http://www.meisterschmuck.com/sites/meisterschmuck.com/files/styles/product_detail_large/public/images/products/74-wr.jpg)
Also there is a software u can see where the pictures is photoshoped, "u can see there is some post work done, like highlights and shadows but this pictures come atleast 70% from the render.

The secret seems behind the lighting environment or Hdri.

This is the progress i have so far...not that pretty :( I'm still not happy. Can never sell a ring in this render.

It feels that i'm close "technically", like the highlights ect...but the way it looks it's totally not close. Meister ringen rings just charm you...this one says "don't buy me" lol
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 17, 2013, 09:45:22 AM
You are very close here annamaria :)

But you are comparing two very different images.  The meister rings contain color and a reflective ground.  Your rings are gray against white, so you have a flat monotone composition.

I would experiment with changing the color assigned to the brushed metal.  I work with with metal all day and each has a subtle tone - even white gold, platinum and titanium are not pure gray.  Pure gray is not the way to go.  Take a photo of your rings and examine the unaltered image with a color-picker.  Assign that color to your brushed material.

I have found that realism improves in this type of image by adding color.  If the ring itself has little or no color, then add color to the background.  Color gradient backgrounds with a ground reflection will make your ring pop.  I like to render with an alpha channel, then add in the background in photo shop.

I feel you are trying to copy your competitor's look and perhaps what should be done is come up with a unique look that promotes your rings in the best possible way using the tools you have.  Each high end jewelry brand seems to have their own way of presenting their work.

Experiment with subtle ring color, color backgrounds, and ground reflections until you make it pop.

Ed
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 20, 2013, 09:04:11 AM
Quote from: Ed on April 17, 2013, 09:45:22 AM
You are very close here annamaria :)

But you are comparing two very different images.  The meister rings contain color and a reflective ground.  Your rings are gray against white, so you have a flat monotone composition.

I would experiment with changing the color assigned to the brushed metal.  I work with with metal all day and each has a subtle tone - even white gold, platinum and titanium are not pure gray.  Pure gray is not the way to go.  Take a photo of your rings and examine the unaltered image with a color-picker.  Assign that color to your brushed material.

I have found that realism improves in this type of image by adding color.  If the ring itself has little or no color, then add color to the background.  Color gradient backgrounds with a ground reflection will make your ring pop.  I like to render with an alpha channel, then add in the background in photo shop.

I feel you are trying to copy your competitor's look and perhaps what should be done is come up with a unique look that promotes your rings in the best possible way using the tools you have.  Each high end jewelry brand seems to have their own way of presenting their work.

Experiment with subtle ring color, color backgrounds, and ground reflections until you make it pop.

Ed

Hi Ed, thanks for your suggestions. I thought experimenting more before replied to your post. I can't get anything close to whatever i do. It'not the reflections it's that surface metal.

For example this one, (http://www.christianbauer.de/uploadimages/gallery/1330348020_big.png) it's a toally different look. but those are all photographed. We don't have the budget to photograph so many pics.

i'm also trying maxwell, i do get realistic "metal" but it's not not commercial look, so can't sell the rings like that. So i'm still experimenting.

It is easy to find somebody who does normal jewelry, like solitaires, and actually we also get pretty close. but those wedding bands are kinda hard for us. I have still time on my demo cuz i still don't know what route i'm going to go. I love the active community here.

I may also post a job type of thread to see if somebody can achieve those looks. If we could buy the scenes and put our jewelery and experiment because we can't get what we want (yet).

I mean, i even took the 9 hour class on maxwell, i can create materials render cars ect, same in keyshot, but i can't get that jewelery like i want.

Let's see what we can achieve in weekend.

Greetings and thanks for all your help u provided so far!
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 20, 2013, 10:24:42 AM
annamaria -

I agree about the cost of jewelry photography.  I have a dedicated table-top studio with three 800 watt wireless strobes, soft boxes and a Canon 12 MP with macro lens, tethered to a laptop for instant views.  I get good results, but it's time consuming and requires a lot of post processing.  Any professional photographer will say taking photos of little shiny round objects is one of the most challenging assignments.

For these reasons I became interested in 3D modeling and rendering as I realized more and more product shots are renders.

I also have the Maxwell learning edition and ran some tests there.  I even rendered the same ring in the same position in both Maxwell and KeyShot and showed the results side-by-side. They were both good renders, but people liked the KeyShot version better.  The only area Maxwell came out ahead was for text engraved rings - their displacement mapping did an excellent job as opposed to modeling the recessed text.  But that's more of a modeling issue, not a KeyShot issue.

As far as the reference images in your latest post, the brushed metal looks like it has a Curves adjustment to blow out some of the detail.  Using a Clown pass will allow you to select portions of the ring and apply Curves selectively.

I've also looked a several tutorials on jewelry photography post processing.  In my opinion, the post work was so involved, the result resembles an illustration more than a photo.  But maybe that's the "commercial" look people want.

I think you're on the right track.  Please post more of your recent attempts and hopefully others will join in with suggestions.

Ed




Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 20, 2013, 11:56:51 AM
Can you share one of your ring models/scenes, Anna? You can save your KeyShot scene, textures and lighting in an easily distributable package (File > Save package...).
I'm not very familiar with jewelry rendering, but I'd like to give this a (key)shot tomorrow. ;)

Dries
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 20, 2013, 04:08:16 PM
KeyShot render on the left (with post processing), reference images on the right.  Not trying to duplicate or color-match the colored metal portion here.

Yes?  No?  Maybe?

Ed

Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 21, 2013, 07:37:30 AM
Quote from: DriesV on April 20, 2013, 11:56:51 AM
Can you share one of your ring models/scenes, Anna? You can save your KeyShot scene, textures and lighting in an easily distributable package (File > Save package...).
I'm not very familiar with jewelry rendering, but I'd like to give this a (key)shot tomorrow. ;)

Dries

For some reason it "changed the texture after i save it. I think both textures got in sync but they shouldn't as it's different.

thanks

Ring scene.ksp (http://www45.zippyshare.com/v/68950882/file.html)
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 21, 2013, 07:42:20 AM
Quote from: Ed on April 20, 2013, 04:08:16 PM
KeyShot render on the left (with post processing), reference images on the right.  Not trying to duplicate or color-match the colored metal portion here.

Yes?  No?  Maybe?

Ed

Ed, my self i could not achieve what u have achieved. Only thing i see here is the "brush metal in keyshot is rough, while the reference its "glossy". The brush is so nice and don't understand how it's "whitish" and still nice and visible. Seems the brushes are longer ? no idea. Problem with rendering is, if u change something it affects everything.
The bands are tricky. Rendering normal jewelry is not a problem even in vray of rhino we can get good results. But this bands...really really tricky.
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 21, 2013, 10:23:54 AM
annamaria -

I agree - smooth bands are tough.  Intricate jewelry is much easier.

Yes, the brush marks are longer on the reference.  Should be able to duplicate that by stretching the bump map in Photo Shop and using "no repeat" in KeyShot.  I think a bump map stretched with a ratio of 10 units in length and 1 unit in height will work well for the outer surface of a band without repeating.

The only post effect I used was "Levels" and "Curves" in PS.  This creates some white blown out areas and darker edges which seem to match the reference images better.  Unfortunately that technique also breaks the brush marks into shorter segments which make it look rough as you noted.  I need to think on this and experiment.

"...Problem with rendering is, if u change something it affects everything. "   That happens.  I find  it can be an iterative process - pick the HDR, then tweak the materials slightly to best interact with that HDR.  But once you have that dialed in, you can drop in your various ring models and crank them out quickly.

Ed
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 21, 2013, 12:21:38 PM
Okay, this is fun! :)
Thanks for sharing the ring model, Anna.

1st image is straight out of KeyShot (PNG screenshot).
2nd image with adjustments like Ed previously talked about in Photoshop.

This is using the unaltered HDRI that you used. I applied one of my own bump maps and played with some other settings.

Dries
Title: Re: Brushed Metal Jewelry
Post by: TpwUK on April 21, 2013, 12:27:20 PM
And here's my effort - pure KS, no re-touching KSP provided with post incase you want to play further ...

Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 21, 2013, 12:49:50 PM
Another shot...
This time I reduced the texture scale by 50pct.

The brush effect should be more subtle.

Dries
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 21, 2013, 01:34:02 PM
Yet another shot...
Now with a custom (pin light only) HDRI.

Materials are the same as in last shot.
This is my last attempt for today. :)

Dries
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 21, 2013, 02:03:21 PM
DriesV - That looks pretty good.  Can you post the KS Package file to the forum?

Ed
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 21, 2013, 02:24:45 PM
Here you have 'em.
Packages were named according to posted renderings above.

Dries
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 21, 2013, 05:10:07 PM
Thanks Dries - Great job on the HDR.  I think annamaria has all the tools and tips now to dial in the settings and get the job done.  I hope she'll post some results.

Ed
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 21, 2013, 05:14:22 PM
Quote from: Ed on April 21, 2013, 10:23:54 AM
annamaria -

I agree - smooth bands are tough.  Intricate jewelry is much easier.

Yes, the brush marks are longer on the reference.  Should be able to duplicate that by stretching the bump map in Photo Shop and using "no repeat" in KeyShot.  I think a bump map stretched with a ratio of 10 units in length and 1 unit in height will work well for the outer surface of a band without repeating.

The only post effect I used was "Levels" and "Curves" in PS.  This creates some white blown out areas and darker edges which seem to match the reference images better.  Unfortunately that technique also breaks the brush marks into shorter segments which make it look rough as you noted.  I need to think on this and experiment.

"...Problem with rendering is, if u change something it affects everything. "   That happens.  I find  it can be an iterative process - pick the HDR, then tweak the materials slightly to best interact with that HDR.  But once you have that dialed in, you can drop in your various ring models and crank them out quickly.

Ed

Ed, Great idea to strech the texutre in photoshop and use a no repeat. I will try that one for sure! I think my problem is that i'm desperate i tend to jump alot from render to render.
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 21, 2013, 05:16:21 PM
Quote from: TpwUK on April 21, 2013, 12:27:20 PM
And here's my effort - pure KS, no re-touching KSP provided with post incase you want to play further ...

Thanks for your input! Really lovely ring! I will also play with it and post updates on it!
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 21, 2013, 05:19:10 PM
Quote from: DriesV on April 21, 2013, 02:24:45 PM
Here you have 'em.
Packages were named according to posted renderings above.

Dries

Thanks Dries for everything. It's  better then what i did. Your brushes are really nice. I will play with it and will keep you updated.!

thanks again
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 22, 2013, 01:17:18 AM
Glad you like it! ;) I hope to see some of your renderings soon...

Quote from: annamaria on April 21, 2013, 05:14:22 PM
...
I think my problem is that i'm desperate i tend to jump alot from render to render.

Yeah, I know the feeling. Jack of all trades, master of none. This used to be my mantra for a while, but I decided to focus on a few select tools instead.
Don't be deceived by KeyShots easy to use premise. It's a very capable renderer and you still need to know all the ins and outs in order to push the tool to its limits. For now, you just have to assume that KeyShot is perfectly capable of doing what you want it to do. You just have to focus and learn how to make it work for you. Of course we can always try to help in the process. :)

You get from KeyShot whatever you put into it. For your type of rendering, textures (diffuse and bump) and lighting are key to achieving great results.

Dries
Title: Re: Brushed Metal Jewelry
Post by: Chad Holton on April 22, 2013, 08:39:58 AM
I'm a little late to the party  ;D but thought I would post what I ended up with. This was heavily based on your reference images from page one. The diamonds were done on a separate pass. Let me know if you'd like the KSP. ~Chad

Edit: Added DOF
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 22, 2013, 09:04:26 AM
Chad - I thought you only did castings :)   I'd like to see your KSP.

Ed
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 22, 2013, 11:03:49 AM
Quote from: Ed on April 22, 2013, 09:04:26 AM
Chad - I thought you only did castings :)   I'd like to see your KSP.

Ed


Me too! The reason i don't post updates is because i'm embarased that i can't post quality stuff after all the help i got!

So please post it! anything is welcome!
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 22, 2013, 11:29:14 AM
Quote from: annamaria on April 22, 2013, 11:03:49 AM
Quote from: Ed on April 22, 2013, 09:04:26 AM
Chad - I thought you only did castings :)   I'd like to see your KSP.

Ed


Me too! The reason i don't post updates is because i'm embarased that i can't post quality stuff after all the help i got!

So please post it! anything is welcome!

performance anxiety? ???
If you don't show us your progress it's hard to give further advice...

Dries
Title: Re: Brushed Metal Jewelry
Post by: DriesV on April 22, 2013, 12:26:28 PM
OK, these are my last images before Anna posts some of her own. :P
I used the same custom pin light HDRI.
I primarily played with the diffuse color of the colored metal ring and brightness/contrast values of all sorts (environment, settings and texture).

For the adjusted image I did several things in Photoshop: curve adjustments, mild vibrance/saturation boost, color balance adjustment to yellow, blending with very high contrast (with extreme curve adjustment) layer copies at multiply & linear dodge mode (+/-10pct. each).

Dries
Title: Re: Brushed Metal Jewelry
Post by: TpwUK on April 22, 2013, 01:29:51 PM
Nice work DriesV, but i actually think the raw keyshot ones are now better than the re-touched, so I guess that means you have got it about right. I have never seen a material so dependant on camera angles, lighting and scaling along with contrast and brightness take so much effort. It's a seriously hard challenge

Martin
Title: Re: Brushed Metal Jewelry
Post by: Chad Holton on April 22, 2013, 04:15:42 PM
Quote from: annamaria on April 22, 2013, 11:03:49 AM
Quote from: Ed on April 22, 2013, 09:04:26 AM
Chad - I thought you only did castings :)   I'd like to see your KSP.

Ed


Me too! The reason i don't post updates is because i'm embarased that i can't post quality stuff after all the help i got!

So please post it! anything is welcome!

I like to dabble with jewelry every now and then, Ed.  :D

@Anna & Ed - About to send the package file your way using the email you have under your profile.

Here's one more... just a tad different. A little more crisp now and changed the Env angle some. I only bumped up the gamma a small bit after adding the diamonds in post.
Title: Re: Brushed Metal Jewelry
Post by: Ed on April 22, 2013, 05:17:07 PM
Here's my latest version of the "Jewelry Catalog" look for bands.

DriesV - I used your floor material and metal brush map on my model.

I experimented with an existing studio HDR and added one pin and some tilt to get more light toward the ring bottom.

The gold stripe was rendered using a different HDR, and output with alpha, then overlayed on the original ring render.  The diffused lighting for the band had made the gold look flat, so this technique restored life to the gold.

Ed
Title: Re: Brushed Metal Jewelry
Post by: Chad Holton on April 23, 2013, 07:16:58 AM
Hi Anna,

A couple of thoughts that may help you out:
- As Ed said, it's hard to render something with such little features. So, add as much detail as you can to your ring. Little fillets/chamfers/, engravings, etc. make a huge difference. Sharp corners stick out like a sore thumb to me.

- Maybe add a little color correction to make your images "warmer". Check out this image (same as above but just made it a little warmer feeling and less cold or "industrial" by adding a little yellow/orange):
Title: Re: Brushed Metal Jewelry
Post by: annamaria on April 23, 2013, 02:30:28 PM
thanks everyone for helping me! I'm trying to get closer, as there is no point on posting my progress as it's the same as the project files u guys provided.

Also i noticed when i open project files of dries and chad, it's slower then mine. I did disable the depth of field.

I have a i7 2600 machine, with 16gb ram. I guess it's not that enough?

I didn't used "ground floor" so it was faster with the rings.

I will post an update when the update is worthy to post. I will try on different rings to see what i get. and also different hdri's.

Greetings and thanks everyone for your support! Really!