On the 400/5.6, there is no rear lens group. So that would be the whole lens group. :-) Not much use if it's missing the rear half of the lens body though, unless someone has a lens in need of repair. Was this one of the lenses that was made in an M42 version as well as for the 6x7/67 mount? I remember reading something about a couple of the long telephotos having identical optical designs.
-Mat On 7/15/05, Shel Belinkoff <[EMAIL PROTECTED]> wrote: > Looking more carefully, it looks like it may be just the front element > group, which on many Pentax lenses just screws off from the rest of the > lens. > > Shel > > > > [Original Message] > > From: Mat Maessen > > > Looks like the picture cut off the back half of the lens. > > I've got one of these at home in almost pristine condition. It's a > > beautiful lens. > > >
