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View Full Version : High Speed Sync Issue with 580EXII


supernova74
21st of February 2012 (Tue), 16:53
Just a quick question. On a couple of occasions ive ben using HSS on a shoot and for some reason it wont work, it go's back to 1/200th. Any one have any ideas why this would be happening ? Frustrating. If i turn flash and camera off for a bit and back on again, problem go's away, but returns randomly....

oldvultureface
21st of February 2012 (Tue), 20:00
Weak or dead rechargeable cell in your flash's battery pack? Poor connection on the hot shoe?