3ds max bitmaps

[eyepiz]

Hello,

for some reason when I save png's or a tiff files I get a slightly darker image in 3ds Max, exporting to jpg seems to be the only format that matched 3ds max and Photoshops output.

Any Ideas why I keep getting this?

[vlado]

Are the PNG/TIFF files 8-bit or 16-bit? Do you have the same issue with VRayHDRI?

Best regards,
Vlado

[eyepiz]

8-bit I had the same issue with VRayHDRI.

[eyepiz]

**Edit** it something to do with color profiles, my video cards driver crashed and now I have mismatched color profiles between windows and Max.

[eyepiz]

I reset my color profiles to system defaults and checked the Photoshop color settings, I left the defaults I have never messed with them before, I only checked the profile mismatches and missing profiles boxes.

Now this is what I get on a few jpegs I downloaded today, the image I downloaded earlier with the mismatch had Adobe RGB 1998.



Here is another one from earler today.



I usually quick export to jpeg and this option is what matched max.. it looks like it has "convert to sRGB" were the "save as" saved in Adobe RGB 1998.



Do I need to convert everything to sRGB? or am I totally confused here??

[dans]

In your example you are just displaying images and 3ds max just doesn't use color profiles. It just uses the color values as written into the image file. I believe it simply assumes them being in sRGB space for most of low dynamic range formats (JPG, PNG...). So 3ds max just shows you the values as written in the image file - which does not match your display. Your monitor roughly matches sRGB space I assume - otherwise your sRGB JPEG also wouldn't match what Photoshop shows you (since 3ds max does no do color management when displaying things, just a simple gamma correction).

So, yes use sRGB or linear images - and tell 3ds max on import what it is. For exr/hdr i will automatically know they are linear (gamma = 1.0) and assume 2.2 for the others. So sRGB JPegs/PNG... will be fine.

For use as a texture you should be able to use VRayICC to do the color conversions. See https://docs.chaosgroup.com/display/...ap+%7C+VRayICC This way V-ray should interpret an image in Adobe RGB space correctly. I never tried this myself.

However displaying an Adobe RGB image correctly in the 3ds max bitmap viewer is not possible in 3ds max. (without rewriting the bitmap importers)

Daniel

[Deflaminis]

Try checking Assign Profile Adobe RGB but also check to then convert it to the working profile. That will stop it from displaying in sRGB and will actually convert it to/embed sRGB from Adobe RGB. Assigning the profile just means it's going to display it with a certain profile, but not embed it. There's another way to do this once you've opened the image but it's a pain, this works in most cases.

AJ

[eyepiz]

Thanks for the clarification guys, very much appreciated! I have a better understanding of color space now.

[dans]

Well, if you don't want to work or preserve a wider colorspace like Adobe RGB and never bothered with it before - then just alwasys use "Convert documents's color to working space" when opening an image. Your working space is sRGB when you reset to the Photoshop defaults. This will give you the least problems with your textures.

Assign profile gives your color values (the numbers) a different meaning - so only do this when you know what color space it was created in or that someone embedded or assigned the wrong profile. Convert will actually try to preserve how the image looks when it goes from one color space to another.

Daniel