I'm excited that the PW MC2 adaptdor for AB Einstein lights is now shipping. It is supposed to provide remote power level control for the strobe and High Speed Synch capabilities. The only reference I can find now is a youtube video that says that HSS does not work faster than 1/320.
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Has anybody actually tried this with a Canon 5DmkII?
I have Einsteins with TT5 + AC3 and the MC2's on three units. They work very well but only up to the max sync speed of your camera body (1/200 on my 5D2).
I hear that you may exceed that if you use the units at full power (allowing a longer flash duration), but I have yet to try that.
With my canon 5DmkII, einstein, MC2 and AC3 I was able to get 1/320. I have not studied the PocketWizard Utility to see if a higher sync speed is possible.
Jim
Thanks for your help, but that means it will not be worth upgrading my existing regular PWs. I can get 1/500th with the optical trigger attached to my flash at HSS-DIY but functional for $25.00.
a) This is not High Speed Sync but rather, Hypersync. The Einstein doesn't pulse like an HSS speedlight, Hypersync merely optimizes sync timing.
b) The default HSS to Hypersync crossover for the 5D Mark II in the PW Utility is 1/320. This can be adjusted by the user to achieve maximum sync capability based on the particular camera/flash pairing.
c) It appears the posters above have not adjusted the Hypersync timings or HSS to Hypersync crossover, so there is no evidence here that the 5DmII/ControlTL/Einstein will not sync above 1/320.
d) Haven't done it myself, but at least in theory I believe PW ControlTL should allow sync at least as high as the HSS hack, and potentially faster with tweaking.
The Einsteins are not good for Hyper Synch because they use IGBT power control circuitry.
At full power they have a tail similar to other moonlights and will do Hyper Sync with ControlTL.
Below full power the light is quenched, same as a speedlite, to reduce power. The result is no tail and no ability to benefit from the early firing that facilitates Hyper Sync.
The Benefit of the MC2 is its ability to control power on Einstein remotely. The AC3 on the Mini offers 6 stops of power control. Since the Einstein has 8 stop range one has to select top 6 or bottom 6 in the setup menu for the MC2 when its attached to computer.
