Vray frame buffer scenes look normal but save out really exposed

[tonypernazza]

Hi guys

I just started using 3d max 2015 with vray and for some reason my vray frame buffer images look normal on the buffer itself but when i save them out they are really exposed. It can be fixed for now using curves in photoshop, but I was wondering if anyone might know whats going on? attached is a sample of the problem

[Arnold Sher]

The reason that it does that is that your gamma is not matching in your vray settings to the one that is setup by default on your max. You need to go into vray settings. Under "color mapping" you will see "gamma" that needs to be 2.2 That should sort it out.

[tonypernazza]

Hey Arnold

Thanx for the feed back, but my color mapping is set to 2.2

I actually used a previous file I had been using with 3dmax 2013 and adopted the files settings because i cant find where the bitmap files input / output gamma is anymore.

It was in the gamma/LUT

mabey this is where my problem lies

attached is my settings by the way

Edited May 11, 2015 by Tonze

[jayeshmane]

hey tony your gamma setting is right but in gamma setting bitmap file is missing in new version

but don't worry

just types in your maxscript listener below command

fileingamma=2.2

fileoutgamma=1

fileoutgamma=2.2(if you use srgbspace in vray frame buffer otherwise no)

this will help you

[Chris MacDonald]

Are you using the VRay Frame Buffer?

 

[edit didn't read the title properly] So you're using the VFb, have you got "sRGB colour space" turned on at the bottom?

Edited May 11, 2015 by Macker

[hardikdhanesha]

Hi,Tony

 

When you use Vray frame buffer that time you should have to save .tif file not .jpg

[tonypernazza]

Hey guys, thanks for all your feed back

Yeah the display sRGB button was turned off, and when I turn it on it shows me the over exposed scene that saves out.

[Chris MacDonald]

That isn't the over exposed scene, that's how it is in a gamma 2.2 (linear) workspace. What you've been working on and saving out is with a gamma of 1. Technically your first image (the darker one) is incorrect; even if that's the look you want to achieve.

 

This is of course a technicality - because if it looks how you want it to look then who cares, but you may run into problems when using stock models or working with other people. To get the contrast/gamma back to where it was just set the gamma in photoshop to 0.4545

Edited May 12, 2015 by Macker

[tonypernazza]

Thanks Chris, Is their anything photoshop cant do =)

Thanks all, you've given me a lot to think about

attached is the final product if anyones interested

[nazarethtomassian]

Hello guys ,

i'm having an almost similar problem , only the image isn't being over exposed after saving (the problem isn't from the gamma, colors are correct)

 

instead after saving , the image becomes a bit Blur , and it loses its sharp quality (the preview from the VFB always looks more detailed than the saved one).

 

i tried alot of things , including changing the Antialiasing filters and the image sampler ... but nothing works !

 

Does anyone have any idea ? i would be really thankful if anyone could help.

[tonypernazza]

Hi Nazareth

I suggest ramping up ur settings to see what happens.

You should start another thread though so more people see your problem and then can help you. =)