I'm working on a personal material test box.
Nothing special really. Just trying out some spacy geometry in a plain and simple Cornell box...
Dries
Looks cool - Does it work with IES lighting to generate focused caustics ?
Martin
Quote from: TpwUK on November 13, 2013, 03:06:21 PM
Looks cool - Does it work with IES lighting to generate focused caustics ?
Martin
Of course it does, Martin. ;)
Dries
Wicked !!
Martin
Wicked indeed :)
Yeah, I'll never get tired of those caustics. :)
Here's a squishy version.
Dries
Looks brilliant.
Is the square light source the only one you've got?
Quote from: Esben Oxholm on November 14, 2013, 02:32:33 AM
Looks brilliant.
Is the square light source the only one you've got?
Yes, it's an area light.
Dries
impressive
Nice!
For those (like me) who don't know what a Cornell box is, this makes interesting reading...
http://en.wikipedia.org/wiki/Cornell_box
A bit squishier.
Dries
Trying out some sort of blob.
This object is particularly suitable for testing translucency.
Dries
Good stuff, Dries! 8)
Whoah! that is a really fantastic translucent material, very good :D
Do I detect some Modo?
Bill G
Quote from: Speedster on November 15, 2013, 07:43:35 AM
Do I detect some Modo?
Bill G
Nope, this is all SolidWorks. :)
Here's another angle.
Dries
Very nice Dries.
Love it!
Great studies! Nice to witness how focused light behaves between each material. Very convincing.
Bad news. I contracted a serious disease...
It's called having-too-much-fun-itis.
I put some lights in those translucent blobs.
Dries
If you look close, you can see that the green light that is reflected from the right wall is scattered back into the translucent material. Pretty cool, I think. :)
Dries
I enjoy your experiments, they are good to look at and educational ... Keep em coming :)
Thanks, Martin!
Here's another box. There's a blueish overhead area light + 6 point light inside the outer blobs.
Dries
A couple tilted blobs.
I might update the box image later, as it's still refining in realtime.
Dries
Just churning out some variations until I find the sweet spot.
Dries
Added some geometry details to connect the orbs.
Dries
That's looking better on the model and the lighting too :)
Trying out some glass.
Dries
You are a machine...lol
Great studies.
Thanks for sharing !
Tim
A little work on the red glass material may yield candy apple or toffee apple as we call 'em in the UK
I didn't add all these different
physical lights (5 area light panels, 2 emissive rings, 6 point lights) for no reason.
Here's a little tip for a
relighting technique in post using 32 bit images that I've been using more extensively lately. It really shows the benefit of working with physical lights.
Some of you CG veterans are probably familiar with this approach from other packages...
Here's a rundown of my process:
- Set up your scene in KeyShot with all your lights enabled. Tweak your lights until you reach the sweet spot for your beauty shot. This will be the starting point.
- Make individual renderings for every light source in your scene. E.g. If you have 2 area lights, make a 32 bit (EXR) rendering with only one light enabled and make another with the other light enabled. Do as many renders as you have lights ('light types') in your scene. Render out those individual lights that you want to be able to control in post. Remember to render to a 32 bit image!
- For the above using the render queue can significantly speed up/improve workflow.
- Import all your finished EXR's into a 32 bit capable image editor (Photoshop) and put them as layers in one document (TIP for Photoshop: File > Scripts > Load Files into Stack...).
- For each layer, set blending mode to 'Linear Dodge (Add)'.
- Add Adjustment Layers for each image layer. I suggest -at least- 'Exposure' (light brightness control) and 'Hue/Saturation' (light color control) for each layer. It's also a good idea to add a few global Adjustment Layers on top to control the image as a whole.
- I suggest putting an image layer and its corresponding adjustment layers in a folder, so lights can be easily toggled on/off with visibility of the folder.
- Play with visibility of light, brightness of lights, hue/saturation of lights, global adjustments... The range of images and lighting variations you can achieve is really quite astonishing.
- With all light layers enabled, the result will pretty much look like your beauty shot in KeyShot.
This is a really powerful and flexible way of working with KeyShot's physical lights.
I attached a sample PSD working document with one of the scenes I posted above. Have fun experimenting!
DOWNLOAD LINK - PHOTOSHOP WORKING DOC (https://drive.google.com/file/d/0Bw6BI0tv_sN8d252NEw5TnExT2s/edit?usp=sharing)Dries
So... maybe the time is right to post a feature request. ;)
Light layers
An option where the contribution of specified lights (area light, point light or IES light) can be rendered out to separate 32 bit images.
When 'Light layers' are enabled in 'Render settings', you can pick (realtime view, scene tree) any number of lights (or light sets) that you want to separate.
Just a quick thought...
Dries
Here's another lighting variation based on the same PSD.
Dries
DriesV, I had planned to register for quiet some time now, but I never find the time to do so, but with this thread I really had to do so, just to thank you. I am wholeheartedly thankful for your share. I just wanted to say thank you, this technique is really interesting and useful.
Quote from: DriesV on November 18, 2013, 04:07:51 AM
Here's another lighting variation based on the same PSD.
Dries
Very Nice! Would jewelry renders look good in these boxes?
Sheesh-simply amazing! Now, with a clown or full clown pass of the entire central model, you should be able to strip out the box and lights to create some really awesome images!
Thanks so much for sharing your tips!
Bill G
Glad you see some use for it! ;) It sure is a very powerful way to play with lighting...
Have to say, these techniques are not new. I've seen them being used before, just not with KeyShot.
Dries
Quote from: diamond on November 18, 2013, 06:36:47 AM
Quote from: DriesV on November 18, 2013, 04:07:51 AM
Here's another lighting variation based on the same PSD.
Dries
Very Nice! Would jewelry renders look good in these boxes?
If you can provide me a piece of jewelry, I'd be happy to try it out for you. ;)
Dries
Quote from: DriesV on November 18, 2013, 11:16:37 AM
Quote from: diamond on November 18, 2013, 06:36:47 AM
Quote from: DriesV on November 18, 2013, 04:07:51 AM
Here's another lighting variation based on the same PSD.
Dries
Very Nice! Would jewelry renders look good in these boxes?
If you can provide me a piece of jewelry, I'd be happy to try it out for you. ;)
Dries
Here is the ring I uploaded in the past. Best of luck!
I've been playing with those diamonds for a bit. Had quite some fun! :)
It seems that using a 'studio box' and some area lights is a great way to mimic some of the HDR pin light qualities. So for those with a non-Pro KeyShot license this might be a good solution to control lighting on jewelry.
Here's a download link to a PSD with all layers set and done for you to tweak. I had the same approach as with the blob scene.
DOWNLOAD LINK - Rings PHOTOSHOP WORKING DOC (https://drive.google.com/file/d/0Bw6BI0tv_sN8UW5CTGlGTHplczg/edit?usp=sharing)
Dries
Very nice results :)
thanks for sharing your tips
i'm always impressed by your work
It looks great. Thanks for all your help!
Dries - The ring turned out very nice and the PS layers are interesting to experiment with.
Did you already publish the test box BIP? If not, I'll build my own.
Thank you for always experimenting and pushing the limits!
Ed
Quote from: Ed on November 20, 2013, 10:18:13 AM
Dries - The ring turned out very nice and the PS layers are interesting to experiment with.
Did you already publish the test box BIP? If not, I'll build my own.
Thank you for always experimenting and pushing the limits!
Ed
Ed, here's a ksp of that ring setup.
https://drive.google.com/file/d/0Bw6BI0tv_sN8ZENHVENjamVBRFE/edit?usp=sharing (https://drive.google.com/file/d/0Bw6BI0tv_sN8ZENHVENjamVBRFE/edit?usp=sharing)
Dries