32 bit EXR in Photoshop Camera Raw Filter, overexposed?

V-Ray V-Ray Common Render Theory
1

So this is something that’s been bothering me and I can’t solve. Maybe it’s just photoshop maybe it isn’t.

Whenever I save an EXR, I do some photoshop work with reflection passes and such, then I want to apply a camera RAW filter in 32 bit but my image is immediately overexposed or wrong gamma, don’t really know. I merge everything and convert to 16 bit and camera raw looks fine then (but without all the 32 bit information)

I just saw a video of a guy NOT having that issue, he goes into the camera raw filter in 32 bit and his image stays the same. Am I saving my EXR wrong or something? I just click save all channels; that’s it. The options are taken from when you save only one channel I guess and those are 16bit halffloat. I work in LWF; gamma isn’t baked and sRGB is ticked in VFB, so the defaults.

Are there some settings wrong in photoshop perhaps.

This is the video: https://www.youtube.com/watch?v=V\_woZIU\_mF0 at 01:00 he uses the camera raw filter without his image changing.

2

I don’t know but I’ve used the CameraRaw filter on 32bit images, and it didn’t change anything for me BUT the 32bit information was lost nonetheless…

3

my 16bit exrs always change a bit in Camera Raw. never solved it. using arionFX for tonemapping now.

4

So it appears to be normal, here and there. And whatever 32 bit filter or adjustment you do it changes to 8bit. I might try/learn fusion to do my editing.

5

i think its normal, i been using it for a while and it always bumps up the exposure right away with 32 bit images

6

the image in the YT video changes slightly. expo and contrast I would say. quite similar to what I’m experiencing. I the change is huge the case might be the auto gamma thing in max - I always save my exrs with gamma overridden to 1.

7

having this problem as well
very annoying
id use arion but its quite sluggish when you get over 6k x 6k…

8

Maybe it’s something to do with settings?

Doesnt Camera RAW open/convert your EXR as a TIFF, then when you open the file, it translates the adjusted TIFF back into the orginal format, in this case an EXR?

9

This also occurs on my 32bit .EXR files, 16bit .EXRs are not changed at all.

Extremely frustrating.

If anyone has a solution to this, I’m all ears.

Cheers.

10

ive gotten use to applying the arion first, convert to 16, then apply camera raw

11

post process version in ACR? changing to 2010 removes overexposure. going back to 2012 sort of tonemaps the image.

12

Same problem here and have been pecking around for an answere here and there for about a year now, w/out much luck. In the mean time, I’ve resorted to just doing exposure adj in 32 Bit. Saving a 32Bit PSD file, then live linking into an 8 Bit PSD file. Then Applying camera raw filter. Biggest reason I liked having camera raw on 32 bit images was to compress the highlights in a more natural way.

The answer is out there - x files :slight_smile:

13

try the new affinity

14

+1, it’s Awesome!