Hi, I work a lot with the Vray Physical Cam, its Exposure Settings and Vray RT. Unfortunately I have always the Problem that my render appears a lot darker in Vray RT if I use the Vray Physical Cam with Exposure. It seems it cannot handle the Exposure Settings in the Vray Cam, or am I missing som…

This might be a gamma problem, what are your color mapping settings?

I render everything in linear space and tell the VFB to display the picture in sRGB space. I thought the Vray RT frame buffer does the same thing? As mentioned if I render without the exposure control with the same color mapping it works. Jon [colormappingexpprob.JPG]

Could you put your mode to ‘Color mapping and gamma’ instead of ‘Color mapping only (no gamma)’, and see if that helps.

Yea I can change it to color “mapping and gamma” to burn in the correction but the difference between VFB and VRTFB is still there while rendering with exposure controll in the camera.

Very quick test, but I can’t reproduce your problem. (I only have Vray 2.40.03 here at my job though, but don’t have this problem at home either) Edit: make sure, your gamma in max is set to 2.2 as you can see in my screenshot, if it’s at 1.0 your active shade is affected. [Capture.JPG]

Thx for your Support. Its strange, I checked it with different workstations here in the Studio and all have that issue. I will switch later back to 2.4 and give it a try. Jon

[image] Small UI Bug Thx for your Support. Its strange, I checked it with different workstations here in the Studio and all have that issue. I will switch later back to 2.4 and give it a try. Jon As mentioned above ( I edited my post, you might have missed it ) are your gamma settings for max…

Ah Yes I missed it. Its always on 2.2 yes. I noticed that we currently rendering with 3.00.03 maybe that could be the reason!

[image] Max 2014 sys requirements - no more xp and vista Ah Yes I missed it. Its always on 2.2 yes. I noticed that we currently rendering with 3.00.03 maybe that could be the reason! I haven’t tried previous builds of vray 3.0 yet, but I doubt that the vray Version has anything to do with it.…

Yes I still have the same Problem even with 3.00.05

VrayRT does not work with Exposure Control of the Physical Cam

V-Ray V-Ray for 3ds Max V-Ray for 3ds Max :: Issues

Vizioen May 7, 2014, 9:23am 8

As mentioned above ( I edited my post, you might have missed it ) are your gamma settings for max at 2.2? I don’t have the problem with 3.00.05 at home.

Topic		Replies	Views
Big color differences when using Vray Physical Cam and exposure V-Ray GPU :: Issues	2	213	August 13, 2010
Physical Camera mess up max 2016 V-Ray for 3ds Max :: Issues	4	587	June 22, 2016
Vray physical cam and dirtmap V-Ray for 3ds Max :: General	7	389	March 30, 2007
Significant Exposure difference between RT and final Rendering V-Ray GPU :: General	2	405	June 5, 2009
VRayRT camera exposure having zero effect V-Ray for 3ds Max :: Issues	8	151	August 12, 2015

VrayRT does not work with Exposure Control of the Physical Cam

Related topics