Here are a couple of hummers from this weekend. I have a bumper crop this year, but only the females would approach the feeder once I set-up the kit. 5DMKIII + 300 2.8L II w 25 mm ext tube, 1/200, ISO360, f11 - 4 flashes all at 1/16 power (2X430EX, 1X580EX, 1X600EX - mounted on lens). I also tried a few w/o stopping the wing motion w all the flashes - just using the 5DMKIII w a 600 mm f4 II and 1.4X w the 600EX and betterbeamer. I think I'm hooked on the detail you can see when you stop the motion w flash, but the set-up does inhibit the birds a bit. Hopefully the males will 'man-up' next w/e.