PSD composite - don't match final image

[G0M0]

Here is my PSD file
I've tried that approach that you've described, with no positive result.
I am wandering if maybe there is some element missing or maybe I am adjusting reflection layer in wrong way - it appears most wrong.
I am using linear dodge instead of screen blending - It give me better results.

[Seraph135]

I am using linear dodge instead of screen blending - It give me better results.

Never screen! Ever! That will never reproduce the beauty render. Only add or multiply can be used and you have to be working with all floating point buffers. Any buffers you multiply will have issues. The only way to correct them is to create your own raw buffers by dividing your gi by diffuse to create your own raw gi buffer for example.

[G0M0]

linear dodge = add in photoshop.
I have other PSD file with imported exr files - the same result.
I'll check tomorrow if all files have proper export settings.

[Dariusz Makowski (Dadal)]

Ife noticed in ur scene that ur beauty is 32 bit but ur layers are actually 16 bit. Make sure ur exr is correctly set up...

[G0M0]

Ok, here is 32 bit version of PSD file, made of imported exr files.

[dans]

I had a look at your scene. The main issue is that your color mapping type is set to Intensity Exponential. Color mapping is a non-linear color operation and your render elements stop producing the same result as the main render (unless you use the type Linear Multiply).

So I switched to Linear Multiply and rendered to a 32-bit PSD using psd-manager with the elements VRayBackground, VRayLighting, VRayGlobalIllumination, VRaySpecular and VRayReflection. (The VRaySpecular element is just for completenes - shows some small highlights, but isn't important here for the overall result).

With that I get a 100% match (checked with Render layer set to Difference blending mode - all pixels pure black).

Get the PSD here:
http://dl.dropbox.com/u/727425/VRay/...psdmanager.psd

Best Regards
Daniel

[G0M0]

Thanks!
I didn't thought that color mapping will have any impact.
I'll try what you've described.

[G0M0]

Ok, removing color mapping helped, but how to reproduce this effect exactly?
I tried to play around in phoroshop with exposure control and gamma settings but I can't achieve this kind of look.
It always looks to flat and desaturated with 32 bit and manipulating the gamma doesn't help.