Cheers ND I used my 40d and took 2 lens, efs17-85 and ef 70-200 f4 is. I took most of the shots with the 70-200 but switched off IS, dial set to av mode,set to f4 & kept an eye on the shutter speed. If it went below 180 I upped the iso. We were lucky as it was a clear day so i was able to shoot mainly at iso 100.