Archived posting to the Leica Users Group, 1997/02/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 11:18 PM 24-02-97 -0700, Ben wrote: >>When focusing a rangefinder camera, you >>should start either at infinity or the closest setting, and move the ring in >>one motion until the two images coincide--do not rack it back and forth, as >>you might with an SLR, to improve the focus. The reason this works, I >>understand, is due to the nature of the mechanical linkage between lens and >>rangefinder--racking it back and fortyh produces inaccuracies. > >This is an old machinists trick. As the bed screw of a mill or lathe wears >it develops slop. When moving the bed to make a cut you back up so that the >screw is engaged fully when your tool touches the work. Same with the >rangefinder. Let me see if I understand this. Start at one end of the focusing scale. Focus by turning the focus ring in one direction until images coincide. Do not rack it back and forth. If I overshoot and am not satisfied with the state of focus, what do I do? Go back to infinity and start over? Dan C.