Lighting channels and rendering time

[Alejandro Testa]

Hi, I have been working on a model  with 6 ilumination channels, I jut want to Know how much time (in total percentage)  add each ilumination channel?.

 

The main problem is that in this case this image spend more time that I expected and I want to reduce time

 

Thanks in advance.

[Alejandro Testa]

Path trace around 800  passes, 6 ilumination channels.

[Roy Hirshkowitz]

The channels themselves don't really add time (they may add a little if you run out of memory to hold the image, but this is not usually enough to worry about).

The additional lighting is what adds time.

[Alejandro Testa]

Thanks Roy, I have an additional question. If you see the daylight image it still need a lot of passes, this lighting situation will get the benefit of the new algorithm  you are working on?

 

 

 

[Roy Hirshkowitz]

Hard to say.  I'm actually using yours as one of the test cases.  It's not benefiting much from the first change I made (the one which improved Akinlolu's bedroom scene performance.)