Yeah, the Kiev/Contax shutter does run slower at sub-1/30 speeds. That’s normal.
Hmm. That's interesting. I just read that the Contax II (the original for which the Soviets took the tooling back to Kiev) both adjusted the shutter slit width, and the travel rate. It might well be that this shutter is working as designed. Might have to load up a roll and shoot it...
Travel times should be consistent at any speed. If it's 12.5 ms it's the same throughout the range. The slit width controls
the shutter speed, narrower the slit, faster the speed. Many FP horizontal shutters,will synch @ 1/60 and that will be
the fastest before the second curtain will be in the film aperture and cut the image off.
If you check the at sync speed and the travel times are right, you should see no sign of the second curtain
when the shutter is released. If you're looking at slower speeds you will see the second curtain begin it's travel
before the first one clears the aperture.
Haven't really paid much attention but think there should be an increasing intrusion as the SS is increased.
I just received the Kiev 4A(M?) I purchased (has the meter, which seems to work, haven't checked for accuracy yet). Everything looks very good, aside from the vulcanite coming up on a couple corners (I can fix that with a little contact cement). It's a 1973 vintage camera, with a 1973 dated Jupiter 8M 50/2 lens mounted. Everything is just as described, lens clean and clear, all functions function...
...except, when I get to the shutter speeds from 1/10 down to B, the shutter both opens and closes pretty slowly. Now, you'd generally shoot these speeds on a tripod, so that's not much of a problem, except it's hard to be sure the opening and closing take the same time -- it appears, to my eye, that the closing on B starts a little slow and make take 1/10 second or so longer than the opening. Same is true, if progressively a little less so, for 1/2, 1/5, and 1/10, while 1/25 looks pretty okay (though I'm well aware that the eye can't really tell much at this speed). If true, that would lead to uneven and quite possibly inaccurate exposure in these very slow speeds (might not matter much in B, since it's a fraction of a second out of what might be many seconds, but I use 1/10 every so often).
...
Have you had a look at the 'Kiev Survival Site' http://www3.telus.net/public/rpnchbck/index.html Heaps of information and instructions for repair and cleaning.
Donald, if you don't have a shutter speed tester why don't you ask the camera how well it can expose reversal film?
the only question is bleaching, and I might split the roll and try one half in potassium ferricyanide/potassium bromide, and the other half in acetic acid/hydrogen peroxide. Both are known to work on developed silver in B&W, and Kodak used to recommend ferricyanide bleach for C-22 (seems to me I've seen it as an alternative in C-41, too, in documents published back when it was new)..
Someone recommended that I make pot ferri when I complained that my 120 color negs didn't totally clear, and that was the first time I've heard more than the name.
<snip>
EDIT: It just went completely over my head that you said acetic acid/hydrogen peroxide. Yes, I've tried that out as a reversal bleach for B/W slides. I was hampered by the fact that you can't get 9% Peroxide easily by where I live.
I saw a fellow on YouTube who processes E-6 film with a B&W first developer, light fogs, then puts it through the rest of a C-41 cycle -- color developer and blix. This doesn't produce a "cross-processed" look, it produces pretty natural looking transparencies.
Seems like there might be some confusion here. If I use a flash to look at the shutter opening, I should see the whole opening when the first curtain trigger fires the flash, at all speeds slower than sync speed (which seems to be 50 on this shutter; all the higher speeds are marked in red). However, I shouldn't see second curtain intrusion at slower speeds, only at faster settings. This is pretty much the definition of sync speed.
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