Proper color mapping...working

[mzmeskal]

Deja Vu: I ll try that, thanks

Yukon_Cornelius: the number is intensity muliplicator of the light (area)

[3dform]

at the moment I use expo. very much.
My trick: I render the picture in openExr file format (64bit) and import it into photoshop in 2 variations.

First bright, much diffuse light.
Second, much contrast, more dark.
(same pic, different gamma and exp.!)

Then I compose it, and still have full control over it, without loosing quality.

In Animation I use only linear or i have to render at 16 bit color depth, else i loose contrast and therefor quality...

regards,

robert

[mzmeskal]

Does Vray have a full precision output? In other words does it render out in HDR? I think that could be easier than undertaking these steps in photoshop...

[lluis]

HSV setup?

hELLO TO ALL!
Where do i can switch between linear, exposure and HSV.I try to find it under the g-buffer/color mapping parameter rollout but i can't see it!!!

thanks in advance!

ah, i have the advanced 10903g Vray version (I don't know if it matters but anyway here is!)

[mzmeskal]

Hi,
I dont think that HSV exponential was implemented in G version, but otherwise, in the I and J version it is in the section "Color Mapping", there is a slot that rolls down and lets you choose among Linear and exponential....

[cocolas]

none of the images you posted above look/fit with the original texture you posted.....seems like the exposure screws the colors up - (too desaturated, too saturated/not enough detail in the grain/ and the third is overly contrasty within the grain)......
also the phtoshop steps shouldn't have to be used - one shouldn't have to use photoshop to correct colors just because the exposure in vray screws them up
especially on tight deadlines and frequent changes in the project.
seeem like this exposure stuff is in the way......in FR for example colors look right w/out any exposure controls - from the begining.

at this point, the first three images posted become more a matter of which "style" one prefers rather then accuracy to the original wood material

Paul

[vlado]

at this point, the first three images posted become more a matter of which "style" one prefers

Of course. This is what color mapping is all about. If you have different photographs of the same scene made at different exposure levels, with different film and with a different camera, you will get completely different results. Is one more "correct" than the others? No. You choose the one that looks the best to you. It's the same with color mapping (and rendering in general).

In addition, even real-world photographs get color corrected in programs like Photoshop, simply because the author wants them to have a particular "feel"...

Best regards,
Vlado

[mzmeskal]

To Vlado:
Greetigns Vlado....are you planning to add a logaritmic color mapping as well?

[taboo]

btw, Vlado...
are we going to have a interactive colorcorrection in the next realeses of Vray??.. maybe in the new virtual frame buffer.