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Forum: Film SLRs and Compact Film Cameras
11-01-2020, 08:49 AM
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I have two helios 44, 58 f2. One will fit my spotmatic F but the other (apparently the same lens) won't. Don't try to mount a smc takumar in a zenit, the small pint in the lens will catch in one of the recessed screws of the mount and you will have an interesting problem: how to unmount it.
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Forum: Film SLRs and Compact Film Cameras
06-24-2020, 12:26 PM
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Hello. I have just adjusted the meter of my Spotmatic-f which suffered similar symptoms than yours. If you are comfortable removing the top of the camera is not difficult.
There are two different circuits for stop-down metering and for open-iris metering with SMC takumars. The first one can be adjusted by a small pot which can be accessed by removing the film reminder discs in the rewind film axis. You need a known good meter (or camera) and 2 or 3 different light conditions. In my experience is difficult to adjust the high level light AND the low level light so you just make a compromise.
For adjusting the open-diaphragm you have to remove the top cover. There are 2 little pots around the viewfinder: the left one is for the high level and the right one for the low level. You can achive a better adjustment with this procedure than with the previous one.
I have found invaluable these manuals: Pentax Manuals
For removing the top cover "National Camera Manual for Spotmatic"
and for the meter adjustment: "Pentax Spotmatic F Meter"
If you need details I would be glad to help. Regards
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