Hi,
I want to save 32bit exr from VFB. Of course it is not a problem. But when I load it to photoshop and try edit exposure, find out that there are no floating points. Image is cut off to 8bit even it is 32bit image. How I can save image with all VFB settings to real 32bit image?
Maybe I am doing something wrong but absolutely dont know what. I have latest VRay and render on CPU.
Thank you.
Do you have any LUT or Filmic Tone Mapping applied?
Yes, but it doesnt matter, even if I delete them it is still the same. And I have it applied in VFB and everything working fine in VFB so it should in Photoshop too, there is no reason to doesnt.
I found out that only way how to save real 32bit image with all the pixels correct is to disable whole section “display correction” in VFB. When I hide this, image is correctly saved as real 32bit images, but it is useles without all the corrections, denoiser, lens effect and so on.
Can someone from Chaos please put a light on this problem because this is really weird. Thank you.
Well, what is your display correction set to?
sRGB I think.
It doesnt matter what I do, saved image is still 8bit. Please can someone help me? Thank you a lot.
I don’t think that’s possible since .exr’s come out as either 16bit or 32bit. Are you using EXR IO to open the image in PS? Check if the “Mode” (PS > Image > Mode) is set to 32-bit. Also, how do you check the color depth?
I open the image through standard PS open dialog. Image opened in PS has 32bit in headline and I also check it in menu. Then I try exposure dialog in PS to check if real pixel are there.
When I disable color correction in VFB and save the image and open it acheck it in PS the same way, real 32 pixels are there.
I dont get why it is cropped out with VFB corrections on when everything is ok in VFB. But after save not.
I dont have this option enabled unfortunatelly.
Can you show a screenshot how your layer setup in VFB looks like?
8bit? you mean it’s 16/32 but non HDR, right?
can you share exr like that?
It doesnt matter. Even if I delete all layers in stack leaved only the default ones behaviour is the same 
Really dont know what is going on.
Yes, that is right. It is 32bit image, but cutout to 0-255. Sure, tomorrow I will send one, no problem. I really dont know how to fix this. This behaviour is really odd.
Is it some settings in max/vray? Should I reinstall something? Or some setting in windows? I think I tried everything so now I really dost know.
Hey, you can download this exr here:
https://drive.google.com/file/d/1Bt8Go7i9p1Xr7kyDe4mNHLteyRC2DgKi/view?usp=sharing
Let me know what you see.
The image is 32-bit as shown in exrheader. What Color Mapping type was this image rendered with?
I know image is 32bit. It is saved as 32bit image. But all information in it are cropped so it behave like 8bit.
Please what do you mean by color mapping type?
He might mean in the render settings. Is there any colour mapping there, and is everything default, or at least set to linear?
By the looks of that EXR right after opening, it has some form of color mapping baked into it. Be it LUT, Filmic Tonemapping, Highlight Compression in the VFB, or maybe even the color mapping settings in the V-Ray settings are set to something else than Reinhard at 1/linear.
If you mean from Color mapping settings I think it is default for some time now. Reinhard type, gamma 2.2, mode color mapping only (no gamma).
It behave like that in all scenes I tested.
