Don Sanderson mused: > > Another point of interest, every Pentax camera I've ever had > apart uses exactly the same circuit for the hotshoe and the PC > socket. > It's just a wire from one to the other. This includes the > MZ/ZX-5n. > John, by your post below you seem to be indicating that one > is different from the other in some way. > Do you know if some are a different circuit, such as the > MZ-S or PZ series, neither of which I've ever had apart? > > Don
I have no definite knowledge - I think the last time I saw the internals of a camera to that level of detail the flash circuitry was a simple make-or-break switch as part of the mechanics of the shutter assembly. I assumed the PC socket continued to be just such a mechanism, while the hotshoe had progressed to also being part of the multi-contact electronic flash control system.

