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Kareldc
Tinkerer
Username: Kareldc
Post Number: 6
Registered: 07-2012
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, July 28, 2012 - 02:56 pm: | 
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I've gotten a Petri 7s, just because of the fact that it's insanely beautiful, the modernistic design is insane...
But I'd like to use it as well.
I noticed there is a little bit of "play" within the lens assembly. All the rings move like 0,05mm from each other. And the entire lens also moves 0,05mm independently from the body.
I think the camera works as is. But I'd like it to be solid as a rock.
Most of the screws were nearly loose on the rest of the camera body. Could that perhaps be the issue within the lens assembly. Just tighten the screws?
I was wondering how much of a pain it it to remove the lens assembly and to check it out. But I also don't want to ruin what ain't broken...
Anyone any thoughts?
Cheers,
K. |
Scott
Tinkerer
Username: Scott
Post Number: 183
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, July 29, 2012 - 01:46 pm: |
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I repaired and used at least one Petri 7s many years ago. Don't think I still have it, though. But here's what I would do:
Re. the play in the whole shutter/lens assembly, I think this is typical of 1960s Japanese rangefinders in that the shutter/lens assembly is held onto the front of the camera (actually on a removable plate or panel) with a large threaded ring with 2 or 4 notches. That ring needs to be tightened. You need an adjustable lens spanner to tighten or remove this ring. Sometimes you can see this ring when you open the film door (but you probably can't get at it with the spanner with the shutter on the camera). Sometimes, there is a plastic or sheet metal cowl blocking your view.
You need to peel back the vinyl covering from the front to expose the (usually 4) screws that hold the front plate on the body. Remove the screws. Take the bottom plate off. There may be clips or screws to remove in the shuter linkage on the bottom. Then the whole plate comes off and you can get at the ring.
If there is too much play in the shutter speed and aperture rings, you go in from the front, as deep as the "wavy nut". The wavy nut probably has to be tightened a couple of notches. Search the repair articles on this site, and you'll see some photos and advice. |
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