|Guru||Accepted answer and score of 40 or more. This badge can be awarded multiple times.|
mattdm earned this badge 5 times
oct 30 at 16:27Is there development in the world of lenses?
oct 30 at 11:02What is “angle of view” in photography?
jan 10 '12 at 13:59What historic reasons are there for common aspect ratios?
sep 13 '11 at 21:15What is the “exposure triangle”?