Archived posting to the Leica Users Group, 2009/03/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]All those lenses are definitely retrofocus and don't require mirror-up. The 13/5.6 was a monster in size and price, and not that great optically. The first 15, the 5.6 was also large and not that good. The second 15, the 3.5 was a lot better except for flare. The 10/5.6 was an orthographic projection fisheye with specialized application, the various other fisheyes, the 6's, 7.5's, and 8's were all regular equidistant projection fisheye lenses, as is the 10.5mm fisheye for the Nikon DX format. All three 18's that Nikon has produced are retrofocus and rectilinear (using that term loosely, as they have some of the nastiest distortion) and the 4 different 20mm Nikkor designs are retrofocus. The only one that wasn't was the previously mentioned 21/4 Nikkor. The 15 and 12 CV lenses in Nikon mount focus to infinity. At 10:22 AM -0700 3/30/09, Frank Filippone wrote: >Is this about RF lenses or are the SLR lenses included in this discussion? > >>From what I remember, there was a 13mm full frame rectilinear lens... and I >remember a 10.5mm, but forget if it is rectilinear or fisheye..... >The 15mm was also available....and it was rectilinear..... >The 18mm was also available as well as the 20mm..... both rectilinear..... > >Now, what I do not know is if these lenses were retrofocus designs or >not....... > >I could not find a lens on the Cameraquest site that lists a >Cosina/Voigtlander 15mm lens for the Nikon F...... Where is it? And does it >focus to infinity? > >Frank Filippone >red735i at earthlink.net -- * Henning J. Wulff /|\ Wulff Photography & Design /###\ mailto:henningw at archiphoto.com |[ ]| http://www.archiphoto.com