Archived posting to the Leica Users Group, 2000/07/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I've got the problem on my new Voigtlander Bessa-R. Any clues as to how I can adjust it? - -----Original Message----- From: owner-leica-users@mejac.palo-alto.ca.us [mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of Martin Howard Sent: Thursday, July 13, 2000 7:09 AM To: leica-users@mejac.palo-alto.ca.us Subject: Re: [Leica] Stupid question!!! John Hoang jotted down the following: > Would someone explain to me what is horizontal and vertical rangefinder > misalignment. How can I find out mine is misalignment? And how it will > affect picture taking. Many thanks. In short, RF misalignment is when either the two images do not converge at all (usually in the vertical), or when they converge at an incorrect setting (usually horizontal). In other words: vertical misalignment manifests itself as the two coincident images being slightly offset vertically. This may be annoying, but it doesn't affect focus accuracy (other than if it becomes too distracting to see properly). Horizontal misalignment occurs when the images coincide, but the resulting image at the film plane is out of focus. This is most easily (only?) detectible at infinity: Focus the lens at something at least two miles off. If the images in the RF patch do not align perfectly, then there is horizontal misalignment. Obviously, this type *will* affect focus, and requires fixing. How to fix horizontal alignment has been dealt with in the past on this list, and serves as an excellent opportunity to exercise the curious person's skills at handing the list archive engine ;) http://mejac.palo-alto.ca.us/leica-users/ M. - -- Martin Howard | Visiting Scholar, CSEL, OSU | All wiyht. Rho sritched mg email: howard.390@osu.edu | kegtops awound? www: http://mvhoward.i.am/ +---------------------------------------