Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: shortcirkuit on 2020-05-11, 03:37:32

Title: difference between focal length and film width?
Post by: shortcirkuit on 2020-05-11, 03:37:32

Hi guys

In corona, i always only play with the focal length, however there is also the FILM WIDTH - ive never touched that.  What is the difference?  Does anyone use it?  If so why?

Title: Re: difference between focal length and film width?
Post by: romullus on 2020-05-11, 10:10:14

If you don't need to match the photos taken with real world camera, then you don't have to worry about film width in a renderer, just leave it at default and you'll be fine. Film width defines the size of camera's sensor and affects such parameters as lens magnification and DOF.

Title: Re: difference between focal length and film width?
Post by: maru on 2020-05-11, 17:22:02

The difference is the same as between using a digital camera with an APS sensor, a 35 mm film camera, and a medium format 10x10 cm film camera. :)