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slight problem with Industar 22,adapter issue.your solutions
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PostPosted: Tue Apr 08, 2014 11:42 am    Post subject: slight problem with Industar 22,adapter issue.your solutions Reply with quote

i recently acquired colapsible m39 lens Industar 22 and i've run into a little issue regarding adapter. focusing lever of the lens can't be moved from infinity position when the lens is completely screwed into the adapter. if i want to use the lever for focusing i have to unscrew the lens and move lever towards minimum focus distance and then screw lens back into adapter, but then i can focus only from 1m (minimum focus) to about 20m.

i'm sure owners of this lens have ran into this problem already, and i'd like to know how you resolved the problem. ideas that come to mind is adding a ring plate between the lens and the adapter, or unscrewing the knob on the focus lever (but i would like to keep the lens intact)


PostPosted: Tue Apr 08, 2014 1:27 pm    Post subject: Reply with quote

The solution is very simple. Unscrew the focusing knob, it's attached with a screw. The arm of the lever has enough clearance, it's only the knob that interferes.


PostPosted: Tue Apr 08, 2014 1:46 pm    Post subject: Reply with quote

fermy wrote:
The solution is very simple. Unscrew the focusing knob, it's attached with a screw. The arm of the lever has enough clearance, it's only the knob that interferes.


yes, that solution came to my mind, but i'll keep it as a final solution if nothing else works.


PostPosted: Tue Apr 08, 2014 2:01 pm    Post subject: Reply with quote

Some adapter seems designed to tackle this problem like the adapter on the link below. They are pretty expensive. So, unscrew the focusing knob may be the cheapest solution.
http://forum.mflenses.com/viewtopic.php?t=48955&view=previous


PostPosted: Tue Apr 08, 2014 2:01 pm    Post subject: Reply with quote

Not sure what are your reservations regarding this solution. It takes exactly 30 seconds to unscrew the knob and 30 more seconds to screw it back so the lens is restored to original form...


PostPosted: Wed Apr 09, 2014 6:21 am    Post subject: Reply with quote

Is it that the plunger can't be pushed to unlock it?
If that's the case, I would mod the adapter to free it up, even if I needed to buy a new adapter for other lenses.
an adapter like this may be what you need.
From calvin83's link above
http://forum.mflenses.com/viewtopic.php?t=48955&view=previous


Mine looks like this and I can see it being an issue.


PostPosted: Wed Apr 09, 2014 8:15 am    Post subject: Reply with quote

I have the same lens and had a problem using it on the black adapter shown. I modified my adapter in 5 minutes using a file. I screwed the lens on and marked where the lever would be when locked into position. You can see the results:







PostPosted: Wed Apr 09, 2014 9:41 am    Post subject: Reply with quote

philslizzy wrote:
I have the same lens and had a problem using it on the black adapter shown. I modified my adapter in 5 minutes using a file. I screwed the lens on and marked where the lever would be when locked into position. You can see the results:






Nice work! It is the cheapest to modify the adapter from a one piece LTM adapter.