Hi,
We mainly do Hirez CG stills for various formats. Lately we’ve been asked to do car commercial work, now i know lots of companies do CG car commercial work in Vray ,but i was wondering if someone could share the workflow for rendering them out as i seem to get a lot of fizzing/flickering. i am currently using GI with brute Force/Light Cache workflow. Is it better to not use GI ? as when I try this the renders go very noisy .
Any help be greatly appreciated.
Chris
It depends from scene. Rendering cars is loads of fun and u can do it in many different ways. I usually just do simple render -no gi ETC. If u getting noise then ur lighting is bad… What is the ad environment ?
black environments fading to a photographic backplate.
environment lights & area lights.
Right - environment lights ? u mean HDRI ? - if yes giv that light a bit of a sample… 16/24+ thats what is causing noise - or use it at 8/16bit… Tweak it out.
Use spots instead of area lights…
I’m using 3ds max but maya still should have standard lights…
Make the fadeout on layers in post…
cool. thanks for the pointers.
Chris
Hi Chris,
I usually use IM and brute force for GI. Then I cache the IM. This gives me flicker free animation.
With HDR images, as mentioned by Dadal, the sample needs to be high enough to avoid noise flickering. I would use 2 HDRIs, one for reflection and one for diffuse lighting (which is a blurred version of the reflection one).
Yannick