Vray Toon not compensating for Vray Exposure

[busseynova]

I know the Vray toon effect is pretty old, and possible pre-dates the Vray Exposure control, but the checkbox 'compensate for camera exposure' doesn't seem to work when using Vray Exposure. I have a white toon layer and it's coming out underexposed. If I ramp up exposure it increases the render time

This scene has GI turned off, so possibly not working as intended, I just need the toon outline and cryptomatte, not shading etc

[hermit.crab]

Seems to work fine from what I tested. Save the images in history and compare them, the results may be only slightly different (depends on the exposure control settings). If there isn't a difference, do attach the scene here or send it via the contact form so we can take a look. Mention this thread in the message.

[busseynova]

Hmm, you're right, it does work as expected on a fresh scene. I must have something funky going on with my exposure settings.

[busseynova]

Ah I see now, checking that checkbox affects the RGB pass, but not the Vray Toon pass. Is this for a good reason? My logic would say that the toon pass should either return the raw colour of the toon effect, or a properly exposed colour, but returning the raw colour if that checkbox is ticked.

The Toon REelement pass seems to return the colour x the exposure whether that box is ticked or not.

[hermit.crab]

You're right, it does not seem to work for the VRayToon element itself. I've logged an issue (internal bug-tracker id: VMAX-10655) for developer analysis. A workaround may be to do a second rendering where the VRayToon effect has a white color and all lights are disabled.

[busseynova]

Thanks for logging. As it happens that project seems to have evaporated for now, but I would like to use that workflow in future.