analoguser Posted July 19, 2011 Share #1 Posted July 19, 2011 Advertisement (gone after registration) This may be a moot question but it revolves around a common lens situation. I have had for a long time a 28 mm Summaron lens which is in pristine cosmetic condition save for one large problem. The glass has extensive cleaning marks. The glass in this lens is diminutive to say the least, a mere "chips of glass" as has been described to me. My question is: Is there anybody out there who can restore the glass in this lens? It has been said by various LHSA members that it was a decent performer when stopped down and not facing directly into the sun (flare). A well known lens restoration company here in the US will not touch it. I actually don't blame them but I am still interested in any input into this problem. I know it would be expensive to restore or (replace the elements?) Anybody out there in US? England? Europe? Thanks Link to post Share on other sites More sharing options...
Advertisement Posted July 19, 2011 Posted July 19, 2011 Hi analoguser, Take a look here 28mm Summaron threadmount. I'm sure you'll find what you were looking for!
Little Joe Posted July 19, 2011 Share #2 Posted July 19, 2011 I am sorry to say that I think that it is impossible to restore this very nice lens of you. I am a ceramic engineer and thus I know something about glass.If you polish the front element for instance you would alter its optical properties. Theoreticlally it would be possible to smooth the surface through perspex, but I am not sure if it is that what you want. The requirements of the perspex would be the identical optical data as the glass of your element. Best regards Joe Link to post Share on other sites More sharing options...
analoguser Posted July 19, 2011 Author Share #3 Posted July 19, 2011 Thank you sir for your input. But are other lenses not polished and restored? Is the small size of the optics the issue here? Link to post Share on other sites More sharing options...
jc_braconi Posted July 19, 2011 Share #4 Posted July 19, 2011 Carglass ?!!!!! Link to post Share on other sites More sharing options...
analoguser Posted July 19, 2011 Author Share #5 Posted July 19, 2011 You know ...... i really don't understand this last comment. Link to post Share on other sites More sharing options...
luigi bertolotti Posted July 19, 2011 Share #6 Posted July 19, 2011 I seem to remember that here in the forum some people quoted a lab in UK that can build elements of old Leitz lenses (not any, I'd say); if your problem is only on the front element, maybe they could do something... but the front lens of the Summaron 28 is a cemented pair, and this adds surely complexity to the job.... I wonder if is worth in economics terms, supposed I remember right, which I'm not sure.... Link to post Share on other sites More sharing options...
luigi bertolotti Posted July 19, 2011 Share #7 Posted July 19, 2011 Advertisement (gone after registration) You know ...... i really don't understand this last comment. (Carglass, in Europe, is a widespread network of shops specialized in car glasses repair... "we fix everything"....) Link to post Share on other sites More sharing options...
sabears Posted July 19, 2011 Share #8 Posted July 19, 2011 Ask to Leica Luton UK. cheers Link to post Share on other sites More sharing options...
luigi bertolotti Posted July 19, 2011 Share #9 Posted July 19, 2011 Ask to Leica Luton UK. cheers OK !!! The name I didn't remember, but referred to in my post... Link to post Share on other sites More sharing options...
analoguser Posted July 20, 2011 Author Share #10 Posted July 20, 2011 Gentlemen ... Thank you all! Link to post Share on other sites More sharing options...
roydonian Posted July 20, 2011 Share #11 Posted July 20, 2011 To the best of my knowledge, Leica UK in Luton either no longer exists or is in the process of being closed down. Malcom Taylor might be the best man to contact, given his long history in Leica restoration and repairs. Repolishing of front elements was common practice in the UK during the 1950s, when import restructions made it impossible to obtain new lenses and many of those on the second-hand market had front elements damaged by cleaning. Best regards, Doug Link to post Share on other sites More sharing options...
A. Cheng Posted July 21, 2011 Share #12 Posted July 21, 2011 To the best of my knowledge, Leica UK in Luton either no longer exists or is in the process of being closed down. Doug Is that Camera Repair and Restoration, run by a guy called Peter in Luton, what you mean here? Link to post Share on other sites More sharing options...
k_g_wolf ✝ Posted July 21, 2011 Share #13 Posted July 21, 2011 Get a "new" s/h-one, might be cheaper than going the repairroute. Best GEORG Link to post Share on other sites More sharing options...
luigi bertolotti Posted July 21, 2011 Share #14 Posted July 21, 2011 Get a "new" s/h-one, might be cheaper than going the repairroute. Best GEORG My feeling too. Summaron 28 doesn't go for cheap, but neither is a high-ranked lens like, say, Summarex or Super Angulon. Link to post Share on other sites More sharing options...
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