Archived posting to the Leica Users Group, 2010/06/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]don't have the specific lens, but the diagonals you suggest sound theoretically right. sqrt(24^2+72^2) 75.89 sqrt(55^2+55^2) 77.78 the square should give you a whole extra mm in each corner. good luck. -rei On 06/01/2010 11:11 PM, Philip Forrest wrote: > This is slightly off topic, but I will be using a rangefinder for this > project. > > I'm looking to make myself a 24x72mm home-hacked "Xpan" out of a stereo > camera and a MF lens in-shutter. > > The Mamiya TLR lenses are particularly inexpensive and there are > millions of them around, it seems. > > I'm looking at lens options now, particularly the Mamiya 65mm TLR lens > and I'm wondering if it has adequate coverage with acceptable falloff > (no movement) for 72mm at infinity? The diagonal of 6x6 is just about > 80mm. In theory, the lens should do fine, I'm just looking at the edge > performance before I build this thing. If anyone has this said lens (or > maybe some other inexpensive ideas) I'd be very appreciative if you > could measure the circle of coverage for me. Many thanks! > > The Frankenstein camera projects continue! > > Regards, > Phil Forrest > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >