Possible Bug - vray3.3 - Lens Effects (Bloom) darkening RGB pass.

[three_marks]

I'm not sure if this was going on in vray 3.2, but in 3.3, I've noticed that if you have bloom and glare turned on, and set to 'render element only' the rgb color pass darkens by 2.5-5 stops. if you turn them both off, the image brightens again, and similarly, if you set them to 'image only' or 'image and render element' it brightens back up.

im attaching screen grabs of the vfb of the first scene where i noticed it (originally created in 3.2, scene darkened by about 2.5 stops). ive tested and recreated the problem in a fresh, simple scene with a cyclo, a teapot, a vraysun, and a vrayphysicalcam (image darkened by about 5 stops). turning them on and off and changing them around a bunch, i think it is the bloom effect that is the culprit. hope this helps.

[vlado]

Are the color mapping settings at the default values?

Best regards,
Vlado

[three_marks]

Are the color mapping settings at the default values?

Best regards,
Vlado

in both, the max preferences for Gamma and LUT were standard: correction enabled, gamma 2.2, affetc color selectors and material editor enabled.

with regards to the simple test scene, everything was left at default values. with the scene that i included screen grabs of, gamma was set to 2.2, with a Reinhard Burn Value of .15. All else default, except max ray intensity was set to 40.0.

[vlado]

Thanks; we could actually reproduce this here; will try to patch it for the hotfix release next week.

Best regards,
Vlado

[three_marks]

Thanks; we could actually reproduce this here; will try to patch it for the hotfix release next week.

Best regards,
Vlado

awesome. love how responsive you guys are with everything. keep up the good work.

best,
mike.