Archived posting to the Leica Users Group, 2012/07/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On Sat, 21 Jul 2012 Herbert Kanner <kanner at acm.org>wrote: >... I said, ok, when you get closer, the lens has to move away from >the sensor/film. Now think about a pinhole, which could be thought of >as an highly stopped down lens. As the pinhole moves away from the >film/sensor, the angle subtended by same becomes smaller. So the >frame lines in the viewfinder should get closer to each other, making >a smaller rectangle. >Good to be forced to think once in a while. >Herb ====================================================================================================================================== The Konica IIIA and IIIM rangefinder cameras of the late '50's had the usual parallax correction, but also variable frame lines to compensate for reduced field of view (but the lens was non-interchangeable so they could do this). Alan Alan Magayne-Roshak, Senior Photographer UPAA POY 1978 University Relations University of Wisconsin-Milwaukee amr3 at uwm.edu http://gallery.leica-users.org/v/Alan+Magayne-Roshak/ "All the technique in the world doesn't compensate for an inability to notice. " - Elliott Erwitt