Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] I need help! => Topic started by: Atlantis on 2020-12-15, 14:19:27

Title: Is it possible to exclude a background image/environment from Depth Of Field?
Post by: Atlantis on 2020-12-15, 14:19:27

Hi

I often use background images for my architectural renderings. (via Corona scene environment or the Cinema 4D background object)
The problem is: As soon as I use DOF, the background image becomes totally blurry.
Physically this isn't correct as it happens also at F11, focused at 8-9 meters. A real photograph would be sharp until infinity.

Is there a way to exclude the DOF calculation from the background image?
I know the workarounds with alpha channel or the ZDepth map, but it would be nice to get the image rendered correctly in the first place.

Cheers
Atlantis

Title: Re: Is it possible to exclude a background image/environment from Depth Of Field?
Post by: pokoy on 2020-12-15, 18:43:35

Environment is mapped from infinity so it's possible it blurs more than expected. For a physically more correct behaviour you could map it on a plane and position it correctly.
I've made the same request in version... 1.3 or 1.4 for Max, maybe it finally gets some traction.

Title: Re: Is it possible to exclude a background image/environment from Depth Of Field?
Post by: Atlantis on 2020-12-16, 00:00:55

Thanks pokoy

Yes I also tried to map it on a plane, but I don't find this solution very elegant. Is this how "professionals" work with background images?
A simple on/off switch would be fully sufficient.