camara position and image brightness

[FSGFX]

is it possible that i get brighter images in one scene if the camera path is longer than i the other one..?
in the first scene the camera path is longer in the beginning but at the middle of the animation they are exact the same...
the one with the shorter path is darker... but there should be no difference...
im rendering with bf lc...

[t.petrov]

Are you using physical camera and is you "center of interest" attribute or "focus distance" attribute animated on the camera?

[FSGFX]

yes im using a physical cam... and the center of interest is different...

[t.petrov]

Then probably you're seeing this effect: http://forums.chaosgroup.com/showthr...erent-exposure!