I've got three widely disparate cameras which I enjoy shooting: A Pentax Spotmatic (circa 1968), a Pentax 645N (medium format film); and finally a Canon t3i Rebel DSLR.
My goal is to find a flash which works with all three cameras. I'm looking really hard at the Yongnuo YN565EX ETTL Speedlite. I love the ETTL feature which should work hand in glove with the DSLR and the 645N, which both have AF lenses.
As for my beloved Spotty, I'm reasonably sure I can work the flash manually, plus there is a PC outlet on the unit which will plug into the camera body's "X" and "FP" receptacle. NOTE: I'm a little more concerned with voltage issues here, as I have read that these modern flash units can blow up the electronics (what there is of them; in the Spotty's case, nothing but the light meter) on vintage cameras.
The YN is really priced right. They are virtual Chinese knockoffs of Canon Speed Lites and sell for a fraction of the Canon price. I'm getting really positive feedback in my research on them.
Am I headed in the right direction? I haven't pulled the trigger yet but my finger's getting real itchy!
Bob