Amateurs imitate, Pros copy

Two Vaders. No reflections in the shop window pane because of off-camera flash.

Two Vaders. No reflections in the shop window pane because of off-camera flash.

A little birdie at Leica told me something. They said that the pinout of the three extra hotshoe contacts of Leica M cameras that do TTL metering for flash is the same as Nikon’s. And that spiral cables for off-camera flash like Nikon’s SC-29 would work. That one is prohibitively expensive, I got an imitation instead. Which works, see the lead photo. A spiral cable may be traditional, but it still is a hassle. So I asked my contact at Leica if systems like Profoto’s Air TTL that implement the whole protocol worked as well. That’s when he got hedgy and would only respond that he didn’t know, but it wouldn’t hurt the camera. Sneaky!
So I tried that out and it works as well, at least with the M Monochrom. I think it will also work with the first Leica camera that did TTL, the eponymically named M6 TTL. I’ve yet to try that last one, but I’m confident. I read somewhere on this here internet that from the side of the camera, Nikon’s iTTL protocol needs a dumb measurement while the flash fires to cut the flash (or multiple flashes) short and dump the energy into a capacitor when the intended exposure is reached. All the light adjustment and ratios are set by the flashes or commanders, be they Nikon’s or Profoto’s.
Now isn’t that something! O_o

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