I did a few tests with two umbrellas and a pair of 580 flashes. Had the flashes zoomed out at 24 and the key light flash was at 1/2 power and the fill at about 1/4 power. Dialled in my L-358 to ISO 100 and 1/160 and got an F8 reading. Dialed In my camera in and took a few shots. My wife absolutely hates me taking here image so I have to work fast.
Anyway I did this at the cottage so I had no monitor. I had her hold up a white T shirt as well. Everything looked OK on the LCD but I knew I had to see it at home. To my surprise there was some shiny spots on my wife's face much like shooting direct flash. Not bad but far more than I had expected. Am I expecting too much out of these umbrellas? I just checked and the reflective surface is white shiny plastic. Not overly shiny but you can see it. Would that have something to do with it? Or if you are overexposed by even a 1/3 would it be enough to cause this. Just curious about how much latitude you get using an umbrella.
I don't know a lot about this as of yet. I know I can get better results bouncing off a wall or ceiling.


