don't know if this is the right forum section but; next week i'm going to shoot my whole class for sort of a yearbook but not really; our photos will be put into powerpoints and each classmates information and such will be put by the photo. i have to take a picture of 28 people in my class and the last one as a group shot with our teacher. i've already determined how i'm going to shoot the portraits - with a basic umbrella and a nifty-fifty lens (we only have our classroom as location becaues we're not allowed or just don't have time to go anywhere else) i have problems with the group shot though, could you give me any advice on how to photograph 29 people with a single umbrella? I was thinking of putting my umbrella on a desk so it's pretty high up (about 3 meters? and shooting them like that.. would that be ok?