I have never actually sorted out the exact electrical and mechanical operations of these cameras. The fact that with no battery, we can get 1/500 sounds as though the electronic action pulls a mechanical catch in place to catch the shutter mechanism while it's open. then releases it after the set time; if that never happens, the shutter closes at the fastest speed which is marginally 1/500. Incidentally, since my earlier post I found something suggesting the shutter may draw 15 ma which I think is a pretty heavy load for those button cells. And I believe the AE finder has some LEDs and such? (more load)
Originally Posted by fotoobscura
What bothers me is that if it was purely a battery strength issue and the camera seemed to work at four seconds, I would expect an eight second exposure controlled as described to be OK for more than four seconds, then maybe fizzle at five or six, not drop to a 500th.
So, do you have another finder? If what you describe in the excerpt I quoted is the way I understand it, you're saying the shutter was OK without the prism finder in place? I thought I once heard that at least one model of those metered finders was a serious power hog -- or perhaps prone to develop that problem. Mayhaps it's less than 100% (or maybe the batteries are a bit weary -- or maybe both!)
I'm thinking I may have avoided a lot of difficulty by doing 98% of my shooting with the WLF!
Last edited by DWThomas; 02-10-2013 at 10:32 PM. Click to view previous post history.