visiondr
cyclic iconoclast
Here's happy resolution to a problem that has dogged my Leica 50/2.8 Elmar (current) since I bought it. It has been plagued by sticky focusing when making precise, slow focusing movements. It would behave as if the helicoids were just a bit too tight. I tried the "work the lens focusing back and forth until the focusing loosens up" method. It didn't work.
It turns out the type of grease that Leica is using is to blame. They're using a teflon-based "grease" that, according to Don Goldberg, tends to lose its lubricating properties prematurely. Don just returned my lens having replaced said faulty grease with real grease and the results are perfect. The lens now focuses "like butter", as they say. I just thought this might be of help to some.
Ron
It turns out the type of grease that Leica is using is to blame. They're using a teflon-based "grease" that, according to Don Goldberg, tends to lose its lubricating properties prematurely. Don just returned my lens having replaced said faulty grease with real grease and the results are perfect. The lens now focuses "like butter", as they say. I just thought this might be of help to some.
Ron
