Sunday, January 22, 2012
Sunday Synch: When is using flash a really bad idea?
The second situation where flash is a really bad idea is when there is a large mirror or multiple mirrors in the room. I have seen a portrait where the photographer used an off camera flash and turned a large mirror behind a bar into a wonderful softbox. In most cases, however you will create an unpredictable hard light hitting everything but your subject.
The third situation is shooting through glass. I can't believe how many times I've seen someone walk up to a window and shoot and have the flash go off to give them a nice white frame. If you have the lens right up against the glass and the flash going through a different plate of glass, you might be able to light something up on the other side. Generally speaking, as with mirrors, it's good to try to avoid flash with lots of glass around unless you have plenty of time to experiment and set up the shot.