Archived posting to the Leica Users Group, 1999/07/28
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Alex, You wrote: >I was puzzled by the small number '22' beneath where it says 'feet' and next >to the 'm' for metres, but turned 90 degrees. There is also a number on my >50mm Summilux, but that says '16'. I think the little numbers to which you refer are indeed a code for the actual focal length of the lens, but it is easy to work out: I think your new 50 is actually a 52.2mm lens and your older Summilux is a 51.6mm lens. My Hektor 135 has a 50 "code" so I think it is exactly 135mm.... My Summicron doesn't have a number so I don't know what it is... But I think you just knock off the last digit and substitute the two-digit code. Now that I said it was easy, I probably got it wrong. It could be the type of Phlogiston that your lens requires. jimmy - -- jimmyp@marimba.com