Trying to photograph small birds and chipmunks with Canon 5D and 400/f5.6 lens (non-IS). The little darlings move frequently and fast, so I was using Av mode, ISO 800, and f5.6 to keep shutter speed up to freeze motion and reduce effects of mirror slap and vibration (even on a tripod).
Now, if I use a 550EX and Better Beamer, the camera reverts to 1/200 and overexposes every shot by 2 stops. What would be a better strategy? Drop ISO to 200 and use flash to stop motion (but lose the DOF isolation and balanced lighting), ...OR... try using FP (High Speed) flash and keep ISO and shutter speed up?
By the way, on one outing the 5D reverted to 1/320 in AV mode and X-synch seemed to work just fine. Next trip out it insistsed on 1/200 no faster. Same rig, go figure.
Shot at ISO 800 no flash
Added \"fill\" flash with Better Beamer
Oct 06, 2008 at 01:13 AM
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