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I keep alternating back and forth between standard sync at 1/250" and HSS/hypersync at 1/800"-1/1000".
Standard sync is sharper as long as you can maintain about 2.5 stops above ambient. Any less and you get ghosting and motion blur, any more and you get nothing but a black cave for a background. Plus, this early in the year you get a huge change in ambient... nice sunset when the game starts, then a quarter of awkward light... too dim for shooting ambient and not dark enough for a speedlite to overpower ambient. And you really have to time your shot... the 2-3 second refresh cycle seems like forever as the play continues to develop.
So I keep going back to HSS. Well, hypersync with the PW flex/mini. It really does make a difference over regular HSS. You can get full power flash up to 1/500"-1/640" instead of standard x-sync of 1/200"-1/320". And when it does switch over to pulsing, PW hypersync gives more light output than Canon's HSS. FWIW, I use 550EXs instead of 580EXII's, which have had several reports of getting fried by hypersync.
When I use "L" (low speed continuous mode... ~3fps?), my flashes can keep up with a sequence of probably 6 six continuous shots. Worst case I start to lose flash power but since I'm shooting RAW at a decent high-ISO (between 1600 and 3200), so I've got enough to work with in PP if I need to.
I've used 2 speedlites, but last night I decided to clamp a 3rd 550EX on my monopod.
Worked out great. I probably took 700 shots. Ended up with 319 keepers. When I use standard xsync flash, I might typically take 200 shots and end up with 50 keepers... which is great for reducing post-processing time, but I always feel like I missed so many shots.
1D3 with 600/4L and 7D with 200/1.8L+1.4xTC...
Edited on Sep 01, 2012 at 06:19 PM · View previous versions