Archived posting to the Leica Users Group, 1996/09/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>> >> My brand new 35 mm Asph. Titanium, has a tight focusing ring, and this >> causes difficulties in focusing. > > >Is it tight like smooth but tight, or does it rub (metal on metal)? Put your ear to it and focus. Can you hear friction? If so, you've got a bent ring or a big hunk of grit in the helicals. If it's quiet and tight you've got a lube problem. When these sit they go dry. When you say brand new my first thought is warranty. Is yours valid? If so you have no problem. If not you have two directions you can go: One pay someone to go inside and fix it. Two, get a set of screw drivers and a spanner and TAKE IT APART!!! (a hush goes over the crowd). These lenses are very sturdy and simple. Don't be afraid to go inside and clean and lube the helicals. The optics unscrew in one sub-assembly and you are left with the focusing mechanism. You can remaove the bayonet, the focusing ring and the knurled ring that you hold when mounting the lense and you are left with a helical set. This I believe is brass on aluminum. Use a very light oil (unless yours is dry lubed) to flush out the old stuff and allow it to sit on a paper towel overnight, this will soak up the excess and keep everything clean. Put it back together. Good luck.