Retrace threshold

[eyepiz]

Hi!

I'm trying to shave every second I can off a moving part animation I'm getting ready to render. So far all my test shots look fine without Retrace enabled I actually cant even tell the difference when it's on.

I'm getting about a 3 min hit with it enabled, my scene is very simple just a white background with a dome light/Hdri + GI BF/LC.

What's the advantage of leaving it on if I'm happy with the test shots with it off? and what the disadvantage if I leave it off to shave a few minutes off my frames?

I would appreciate any input!

-E

[vlado]

Retracing makes GI more precise in corners - it prevents light leaks, reduces flickering in animations and shows reflective caustics effects in those areas. If you don't have any visible light leaks and you don't plan to render animations, you can probably turn it off.

Best regards,
Vlado

[eyepiz]

Retracing makes GI more precise in corners - it prevents light leaks, reduces flickering in animations and shows reflective caustics effects in those areas. If you don't have any visible light leaks and you don't plan to render animations, you can probably turn it off.

Best regards,
Vlado

Thanks Vlado! I'm rendering an animation so I'm going to leave it on.