Blue-Screen backgrounds in Adobe CS5 "too" dark...????
Posted 27 January 2011 - 09:46 AM
As some shooters have instructed previously, when the blue-screen behind the subject is "under exposed" by 1 to 1-1/2 stops, it is supposed to achieve the best results, and the compositing does go fairly well. But, when the background is put in behind the "properly created" subject matte, the background is "dark" by about 1-2 stops.
If I "over expose" the blue screen, the background ends up correctly exposed behind the subject.
Trying to alter the brightness of the background does not do it.
So, now you can see the dilemma I am in: A well exposed blue-screen produces a good matte but a dark background, while an over exposed blue screen produces a properly exposed background, but a lousy matte.
What to do......?????
Posted 27 January 2011 - 11:37 AM
1) exposing at key? no under/over.
2) thought of going to a green screen
3) what CS5 program are you using? I get best results with keylight 1.2 in After effects; which allows you to play with the screen gain ect.
Also you don't mention what "HD" camera you are using, or how you are posting the footage.
Posted 27 January 2011 - 05:13 PM
Posted 28 January 2011 - 11:58 AM
Also, I can't answer #2 without knowing how you're keying. I know in After Effects if I don't get a "good" key on a green screen I'll wind up with a "black overlay" from keylight dimming down a BG plate until I adjust the screen gain.
Posted 28 January 2011 - 01:23 PM
Posted 28 January 2011 - 02:57 PM
Posted 10 February 2011 - 02:23 PM