On 4 Aug 2005 at 10:24, Kostas Kavoussanakis wrote: > Is the difference because one needs a mirror behind it and the > other one doesn't? Or is the Summicron a SLR lens?
Summicrons are available in SLR and RF designs, the Leica SLR lenses are monsters, the M (RF) lenses are compact due in part to the smaller mounting flange to film plane distance. Leica M lenses also benefit size wise from not having to accommodate aperture control levers or other mechanical linkages. That said the Summicron-M ASPH 35 doesn't protrude further into the what would be the mirror space than the Pentax 31LTD lens, it's a pretty unconventional design, the front and rear lens elements are concave in profile. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
