robert_hooper1 Posted March 5, 2009 Share Posted March 5, 2009 <p>I would like to remove the lens head from the lens mount of a Leica M 135mm f2.8 Elmarit in order to access the rear element for cleaning. I have the first version, (Series VII). I'm assuming this is easy, as the lens is designed for Visoflex use. Thanks.</p> Link to comment Share on other sites More sharing options...
aplumpton Posted March 5, 2009 Share Posted March 5, 2009 <p>Robert. I think so. I had the lens, but never actually unscrewed it. I know that my Tele-Elmar 135 f4 also unscrews and I have found it works well on the Viso. Good idea to clean the rear element this way, as the long focussing tube really doesn't make that too easy. </p> Link to comment Share on other sites More sharing options...
SolaresLarrave Posted March 5, 2009 Share Posted March 5, 2009 I did unscrew my first version a long time ago, accidentally. Then, the fact that it was so easy led me to realize that this was part of the lens design. I never needed to clean it, but I could have done it. The front section comes up fairly clean, from what I recall (I sold that copy when I got a newer, second version). Just try not to force it. If it doesn't turn easily... better leave that job to a pro. Link to comment Share on other sites More sharing options...
robert_hooper1 Posted March 5, 2009 Author Share Posted March 5, 2009 <p>At what point along the lens do the two half's separate, Francisco? I am wondering where to grip the lens to apply turning force. Is there a set screw that needs to be loosened?</p> Link to comment Share on other sites More sharing options...
alan_wilder1 Posted March 5, 2009 Share Posted March 5, 2009 <p>It separates a little below the aperture ring. I usually wrap my fingers around the barrel above the aperture ring and turn with a little force. There are no set screws, just friction. If too tight, the previous owner may have over tightened it. Try more force to turn but only with your hand, no tools. </p> Link to comment Share on other sites More sharing options...
SolaresLarrave Posted March 5, 2009 Share Posted March 5, 2009 Well... Alan gave you a reply better than any I could have offered because I no longer have that lens. Let us know how things work! Link to comment Share on other sites More sharing options...
robert_hooper1 Posted March 5, 2009 Author Share Posted March 5, 2009 <p>Okay, thanks guys.</p> Link to comment Share on other sites More sharing options...
robert_hooper1 Posted March 6, 2009 Author Share Posted March 6, 2009 <p>It took more force than I anticipated, but the head finally came loose. Probably the first time the lens has been taken apart.</p> Link to comment Share on other sites More sharing options...
bob_katz2 Posted March 7, 2009 Share Posted March 7, 2009 <p>Robert...really your rear element needed a clean?? was hazy or something evident?? cause I have the same lens and now I have curiosity for unscreew mine...<br> Bob</p> Link to comment Share on other sites More sharing options...
robert_hooper1 Posted March 7, 2009 Author Share Posted March 7, 2009 <p>Yes Bob, I purchased this lens used and the rear element had many years accumulation of atmospheric deposit, for want of a better phrase. I tried long handled cotton Q-tips, but only succeeded in smearing the recalcitrant substance around. </p> <p>By unscrewing the lens head, I had much better access to the lens surface, and my microfiber cloth cleaned up the mess easily.</p> Link to comment Share on other sites More sharing options...
bob_katz2 Posted April 23, 2009 Share Posted April 23, 2009 <p>Maybe one of these days I get encouraged and unscrew and clean it...thanks,,,<br> Bob.</p> Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now