lfholz Posted March 16, 2015 Share #1 Â Posted March 16, 2015 Advertisement (gone after registration) All of a sudden the subject lens jams and is hard to rotate about 7mm from the locking lug. This happens mounted and unmounted. I searched the forums but found nothing. Any ideas as to the cause and/or fix? Thanks in advance. Â Louis Holzknecht Link to post Share on other sites More sharing options...
Advertisement Posted March 16, 2015 Posted March 16, 2015 Hi lfholz, Take a look here Summicron 50 f2 Rigid infinity lock jam. I'm sure you'll find what you were looking for!
Mornnb Posted March 16, 2015 Share #2  Posted March 16, 2015 All of a sudden the subject lens jams and is hard to rotate about 7mm from the locking lug. This happens mounted and unmounted. I searched the forums but found nothing. Any ideas as to the cause and/or fix? Thanks in advance. Louis Holzknecht  How old is this lens? It may need new grease. Link to post Share on other sites More sharing options...
lfholz Posted March 16, 2015 Author Share #3 Â Posted March 16, 2015 1964. Everything was fine with no issue yesterday. Now it gets very stiff at 10 meters and won't lock or go to infinity. Â Thanks, Louis Link to post Share on other sites More sharing options...
james.liam Posted March 16, 2015 Share #4  Posted March 16, 2015 1964. Everything was fine with no issue yesterday. Now it gets very stiff at 10 meters and won't lock or go to infinity. Thanks, Louis  At 51, memory issues may have led it to think it's a DR and your M6, an M9. It needs a colonoscopy too. Link to post Share on other sites More sharing options...
lfholz Posted March 16, 2015 Author Share #5 Â Posted March 16, 2015 Ah yes you may be correct.I've had two colonoscopies and I feel great. Time for the cron to get cleaned out!!! Link to post Share on other sites More sharing options...
lfholz Posted March 17, 2015 Author Share #6  Posted March 17, 2015 Well I seemed to have fixed the issue. I used a compass as a spanner wrench and carefully removed the back ring holding on the focus mechanism. Found a loose screw, replaced it and all is ok now. Yes with age screws can get loose! 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! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/242371-summicron-50-f2-rigid-infinity-lock-jam/?do=findComment&comment=2781965'>More sharing options...
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