|
Forum: Film SLRs and Compact Film Cameras
02-18-2021, 11:57 AM
|
| |
Armed with cable release and bulb mode one more investigation was made.
Looks like cause is "Tab for lens orientation" scratches lens barrel. When lens is "almost there" this tab starts to scratch the barrel, barrel moves a bit this tab and then stuck. There is a little scratch on the lens that I didn't noticed before (marked with arrow on first photo).
|
|
Forum: Film SLRs and Compact Film Cameras
02-16-2021, 10:33 AM
|
| |
I've made some more experiments.
Both CZJ lenses do not screw fully in, there is still ca 0.5 millimeter gap between body and lens outer barrel. The only Pentax M42 lens I have is SMC Takumar 50/1.4 and it sits tightly, no gap at all.
The problem have to be in CZJ lens protruding rear element. My initial problem was that I've seen the gap between lens and body and tried to screw the lens in with pretty hard effort, resulting in stucking mirror. Today I've screwed Flektogon pretty tight, so the mirror stuck after taking a shot and then turned backwards for 10-15 degrees, until mirror returned in its normal position. Looks like this is the solution, through viewfinder it looks like there is no problem with infinity, focusing and changing aperture do not unscrew the lens (so it have to be screwed tight enough).
Off course I have to put a test roll through, to verify, that it doesn't affect the final result.
|
|
Forum: Film SLRs and Compact Film Cameras
02-15-2021, 09:34 AM
|
| |
Hmm.. I remembered that I have another CZJ lens - 135/3.5. So I gave it a try and it worked fine. I started to compare 135 and 35 and their rear ends looked absolutely identical. So... I've screwed Flektogon on once again.... And it works!!!
I don't know what was the cause of yesterday failures, I tried at least 10 times. Probably some legacy magic. :) Or I tried to screw it on too hard and that fraction of millimeter caused mirror to stuck.
|
|
Forum: Film SLRs and Compact Film Cameras
02-14-2021, 09:54 AM
|
| |
Hello,
it's an old threat, but maybe someone survived..
I have a similar setup: Spotmatic F and Flektogon 35/2.4 and the hint with the pin doesn't work for me. The lens doesn't screw all the way in and after releasing a shutter the mirror is stuck in up position. If I unscrew lens a bit, the mirror is getting back nicely.
Don't have much hope, but could there be any solution to this problem? Is it safe to make the barrel shorter?
PS You can also recommend another M42 body for the Flektogon, I'd like to give it a "film life" :)
Andrei
|
