Perhaps the R10 will have a magnification factor instead of a crop factor ;-). Maybe "oversized sensor" means a 4x5 ratio within the same image circle -- wouldn't that have a longer diagonal length than a 2x3 ratio, or is my geometry off? Tom Schofield --- wildlightphoto@xxxxxxxxxxxxx wrote: > Herewith a handy diagonal Angle of View (AV) table > for several popular focal lengths on a 35mm film > camera (lens focussed at infinity). The AV is > approximate because actual focal lengths often > deviate somewhat from nominal. > > 15mm lens = AV-110 > 19mm lens = AV-95.7 > 21mm lens = AV-92 > 24mm lens = AV-84 > 28mm lens = AV-76 > 35mm lens = AV-64 > 50mm lens = AV-45 > 60mm lens = AV-40 > 80mm lens = AV-29 > 90mm lens = AV-27 > 100mm lens = AV-22.5 > 180mm lens = AV-14 > 200mm lens = AV-12.5 > 250mm lens = AV-10 > 280mm lens = AV-8.8 > 400mm lens = AV-6 > 560mm lens = AV-4.4 > > For a smaller format, divide the above AV values by > the crop factor, i.e., > for the 60mm Macro-Elmarit-R on the DMR the AV is > 40/1.37 = about 29 > > > Doug Herr > Birdman of Sacramento > http://www.wildlightphoto.com > > > ------ > Unsubscribe or change to/from Digest Mode at: > http://www.lrflex.furnfeather.net/ > Archives are at: > //www.freelists.org/archives/leicareflex/ > ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs ------ Unsubscribe or change to/from Digest Mode at: http://www.lrflex.furnfeather.net/ Archives are at: //www.freelists.org/archives/leicareflex/