Depth Pass not rendering out properly

blessid · May 06, 2015, 11:05:33 AM

Hey guys,

I am working on a project in keyshot where i require a few shots with depth applied. In one of my shots, I have a few models scattered in my scene at various distances. When the depth pass saves out with this particular shot its saves an image with a black background and my models completely whited out. Thus, when i try to apply depth in photoshop there is no way to distinguish the depth. See the photos attached, I hope they make sense.

Thanks in advance for your help.

Best
Luke

Finema · May 06, 2015, 07:03:24 PM

Hi Luke,
take a look a this tutorial : https://www.youtube.com/watch?v=B_iMUp5gVsY

blessid · May 07, 2015, 01:08:26 AM

Hi Finema,

I have actually seen this tutorial several times, and overall I don't have any difficulty producing depth passes. But strangely with this image i'm having trouble. Could I possibly upload my scene for you to look at?

Thanks
Luke

PhilippeV8 · May 07, 2015, 01:58:29 AM

Open the EXR file in Photoshop and chose "As Transparency".

Go to: Image / Mode / "8 Bits/Chanel"

Chose "merge" on the popup panel.

You should now see the depth grayscale.

blessid · May 07, 2015, 02:50:12 AM

Hey Philippe,

Thanks for your help. There doesn't seem to be any merge option in the pop-up at all?

Thanks
Luke

PhilippeV8 · May 07, 2015, 03:33:41 AM

Check attachment

Esben Oxholm · May 07, 2015, 06:15:29 AM

@Philippe:
Are you sure that's a good way to do it?
Looks like you got some halo effect around the edge of the seating of the front chair. Probably from the HDR toning.

@blessid:
I was able to get some information out using the exposure adjustment. Check the settings below.

Esben Oxholm · May 07, 2015, 06:20:02 AM

Quote from: Esben Oxholm on May 07, 2015, 06:15:29 AM
@Philippe:
Are you sure that's a good way to do it?
Looks like you got some halo effect around the edge of the seating of the front chair. Probably from the HDR toning.

If you choose "equalize histrogram" instead of "local adaption" it actually looks pretty fine

richardfunnell · May 07, 2015, 09:27:56 AM

Esben, you are the *man*. That's exactly the function I was hoping existed

*edit: Whoah, that's also working much better in the Lens Blur than matching the exposure & offset by hand. Thanks a bunch!

Esben Oxholm · May 07, 2015, 09:39:18 PM

Quote from: richardfunnell on May 07, 2015, 09:27:56 AM
Esben, you are the *man*. That's exactly the function I was hoping existed

*edit: Whoah, that's also working much better in the Lens Blur than matching the exposure & offset by hand. Thanks a bunch!

No problem. Pure luck.
I've actually been on a search myself for such a function. I'd thank Philippe for leading me to the HDR Toning option

PhilippeV8 · May 07, 2015, 09:40:55 PM

... did I do that ?? ...

What bugs me tho is .. why if near is black and far is white .. why is the background black ??

Esben Oxholm · May 07, 2015, 09:50:03 PM

Quote from: PhilippeV8 on May 07, 2015, 09:40:55 PM
What bugs me tho is .. why if near is black and far is white .. why is the background black ??

+1 to that one.

Finema · May 07, 2015, 11:15:17 PM

I think it's because there isn't geometry in the background.
If you add a backdrop ramp it will be OK.

PhilippeV8 · May 07, 2015, 11:56:01 PM

Yeah I know ... but still it makes no sence. If there's no geometry, it means the view is towards infinity .. if far is clear and near is dark .. infinity would be bright white.

Finema · May 08, 2015, 12:23:09 AM

Yes... but it's useless to blur an empty space...