I think I read in DK's review of the A55 where he also said that each shot on the A55 uses 2 shutter actuation's. Does this mean that if the shutter is rated at 100,000 MTBFs it will be reached when 50,000 shots have been taken?
Hmm, I don't remember seeing that in DK's review. But yes, I think that's the case, at least when operating in single-shot mode --
or in continuous mode, as long as it's not the 6fps or 10fps (or 7fps, on the A33) setting.
Operating the same way I described before, in 10fps mode, would require that the shutter be able to cycle twenty times per second, and I doubt seriously that it could really do that. Far more likely, I think, is that when in 6, 7 or 10fps mode, the camera implements a different operating logic for the shutter in which, after the first shot (where it still has to close and re-**** before taking the first shot), it operates just like the shutter in a traditional DSLR -- that is, one cycle per shot.
In this mode, of course, there would be no opportunity for the shutter to open back up in between shots, in order to obtain a live view feed to the EVF between shots. Thus, the necessity for the EVF "slide show" of still images just taken when operating in these modes.
Cheers,
--
Greg
