Quote Originally Posted by Paul Howell
I have owned many of my M42 lens for almost 40 years, (bought my first body and lens set in 1969) and I have not taken any unusal measures to care for either the cameras mounts or lens, not one is even close to wearing out. I have dead meters but my camera bodies are still very solid and the lens are just as sharp as they were day I bought them.
Sums it up for me; I'll take the usual care of my equipment and not worry about anything else. Thanks for confirming.