| Re: Photo setup
from what I gather from the info provided you could treat the flash setup as a typical portrait shoot. One gun on ETTL full power high and left, second gun eye level on right at -1 comp and possibly use the third gun to illuminate the background or provide a touch of backlight on the bird. Use the 20D in manual 1/250second at approx f8-f11 at iso 100-200. Play with the aperture to get the correct exposure, note it is the flashgun to bird distance that defines the aperture not the camera to bird distance. In the custom settings set the camera to use 2nd curtain sync, this will give a better blur if the bird decides to fly in mid exposure. You will need to ensure that the base of each 580EX gun is in line of sight of the transmitter to give a reliable operation, so twist the base to view the transmitter and twist the flash head towards the target. Sorry if this is too basic but I don't know how comfortable you are using the kit
Have fun |