White Balance doesn't work if exposure is off?

[alexthg]

I found that turning off exposure in VRay Physical Camera results in white balance being ignored in rendering.

Is this a bug?
(Vray 1.50 sp2)

[vlado]

This is not a bug; the white balance is part of the exposure for the physical camera.

Best regards,
Vlado

[Micha]

Hmm, from the users view not to understand. I run in this issue too. Could be great, if the white balance could be used allways - why not?

From spot3d.com - it sounds good, no reason why both should be dependent:

Exposure - when this option is on, the f-number, Shutter speed and ISO settings will affect the image brightness.

White balance - allows additional modification of the image output. Objects in the scene that have the specified color will appear white in the image. Note that only the color hue is taken into consideration; the brightness of the color is ignored. There are several presets that can be used, most notably the Daylight preset for exterior scenes.

OK, it's not a bug, but a problem.

[vlado]

I could change it, but potentially this will affect many older scenes where users have counted on this behaviour... I'll make a note though.

Best regards,
Vlado