50mm Summicron query

[Punkrockemo]

Advertisement (gone after registration)

I have an older version of the 50mm (Version 4  I think-See picture) that i have had for a while. There a couple of things i am not sure about.

1. When focusing I find that for subjects up to 2m it back focus's slightly unless I compensate for it. For subjects further away it focus just fine. Aperture does not seem to affect it.
2. I seem to be able to unscrew the front section of lens (In front of focus lever/barrel)- is that normal?

I assume the lens may need servicing. I am not sure where to go to get that done. I live in the UK

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

[ianman]

I think there was a list of UK based repairers here somewhere but I can’t find it at the minute.

I would suggest giving a seller (Red Dot Cameras or other) a call maybe they will be able to recommended someone.

[spydrxx]

The repairer list is in the Collector-Historica forum, although not necessarily fully updated.

[Punkrockemo]

Thank you both. I have found a couple of places I can contact in the collector-Historica forum as suggested.

Does anyone have opinion on if the issue I expereinced is common  

[pedaes]

6 minutes ago, Punkrockemo said:

Thank you both. I have found a couple of places I can contact in the collector-Historica forum as suggested.

Does anyone have opinion on if the issue I expereinced is common  

Second issue is not common. In relation to back focus, is this your only lens that does this?  If so, lens needs adjustment, but if your sole lens may be camera rangefinder needs/also needs adjustment. FWIW

[Punkrockemo]

Thanks, I have a few lens and this is the only one I exerienced the issue with

[pedaes]

Advertisement (gone after registration)

1 minute ago, Punkrockemo said:

Thanks, I have a few lens and this is the only one I exerienced the issue with

A basic lens CLA should sort both issues then.