Archived posting to the Leica Users Group, 2002/12/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]If you're using a screw Leica then there were several firms that made and sold focusing screens which allow you to check focus - up to a point. I have a couple of examples, a Cook and Perkins (who also made them for Periflex) and one with no name. These screw into the rear of the lens, or for close up work, onto the rear of an extension tube which can be held, clamped, on a tripod. But focusing is still a little awkward without a good magnifier and strong subject lighting/contrast. Jem - ----- Original Message ----- From: "John Collier" <jbcollier@shaw.ca> To: <leica-users@mejac.palo-alto.ca.us> Sent: Thursday, December 12, 2002 8:41 PM Subject: Re: [Leica] focal distance > From the film plane naturally but you cannot just set the lens to 1 > meter and go. The markings on the lens cannot be set accurately enough > to use a large aperture lens wide open and close. The best way to test > your rangefinder is with film and a tripod. Use a three dimensional > subject and a large aperture lens wide open. Focus carefully and then > check the film with a loupe or use a slide projector. > > I often use a gg screen to check my focus and coverage but film tells > it all. > > John Collier > > On Thursday, December 12, 2002, at 09:16 AM, Per Claesson wrote: > > > Small question: If I want to check my rangefinder at close distance, > > for instance 1 m, from where do I measure the distance? The film > plane? > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html