On Oct 3, 2007, at 7:25 AM, Cotty wrote: > On 03/10/07, Adam Maas, discombobulated, unleashed: > >> 4/3rds has a shorter register than EF mount (~38mm vs 44mm for EF) >> and >> can adapt all sorts of wierd and wonderful stuff. > > Which is why I'm thinking of getting a 4/3rds camera :-)
To the original question: Nikon mount is 1mm deeper than Pentax mount. The bayonet mountings are similar. This makes it very hard to adapt lens from Pentax to Nikon ... you can't get infinity focus unless you modify the pentax lens to accommodate the thicker register and take a Nikon mount. Lenses can go the other way a hair more easily: you can almost mount a Nikon lens onto a Pentax body, but it doesn't latch in fully, there may be mechanical clearance problems, and focus will go beyond infinity. It's still not a viable proposition without modifying the lens' mount, really. See http://www.a1.nl/phomepag/markerink/mounts.htm for a listing of lens mount registers. 4/3 Mount: 4/3 System Mount has the shortest register of any SLR mount today ... 38mm. The only ones I can think of that were thinner are the Olympus Pen F half frame SLR and Alpa mount. For that reason it is very adaptable, one of the reasons I was interested in the 4/3 System. There are adapters available for Olympus OM, Pentax K, Pentax M42, Nikon, Leica R, Leica Visoflex, Contax/Zeiss, Minolta MD/MC, Exacta, Topcon and T-mount lenses. About the only major mounts that there aren't any adapters for are Canon EOS and Canon FL/FD lenses. I did a page of lens sizes with and without lens hood for some folks on the Panasonic forum ... http://homepage.mac.com/godders/L1-lens-size/ ... but here are some individual snaps of the camera fitted with a few non-4/3 System lenses: Nikon 20mm f/2.8 AF-D: http://homepage.mac.com/godders/L1-lens-size/L1L-7.jpg Nikkor 105/2.5AI: http://homepage.mac.com/godders/L1-lens-size/L1L-9.jpg Pentax DA21/3.2 Limited: http://www.gdgphoto.com/grp-walking/pannyL1_21mm.jpg Pentax Fish-Eye-Takumar 17mm f/4: http://homepage.mac.com/godders/PANL1-17MM/content/bin/images/large/ IMGP6034.jpg Pentax K17/4 FE: http://homepage.mac.com/godders/PANL1-17MM/content/bin/images/large/ IMGP6038.jpg (These last two are from a set of beauty shots with these two lenses: http://homepage.mac.com/godders/PANL1-17MM/ ) Sorry, I don't have a photo of the L1 fitted with the Nikkor 180/2.8AI, Pentax A50/2.8 Macro or FA43/1.9 Limited at present. Godfrey -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
