Q maximum flash capabilities include:
• the on-board flash fires at a maximum 1/2000 shutter speed with leaf-shutter lenses
• the hotshoe fires at a maximum 1/250 shutter speed with leaf-shutter lenses
I was able to use a Yongnuo YN-560 in slave mode S1 (optical trigger) at up to the power level corresponding to a zoom of 80 (7 out of 8 lights) . At 100% power the flash fires too late, after the shutter closes. (It may be possible that the S1 mode fires on preflash and exposure-flash, if so then maybe 100% is power limited, but I'm not sure. I couldn't get S2 mode working, so I couldn't test this.).\
This compares favorably to an average DSLR which generally has a sync speed of about 1/160, even for the on-board flash.
Last edited by Aegon; 10-10-2012 at 08:19 AM.