At 30/01/2008, you wrote:
Thanks David, this is all I wanted to know I guess.
Thanks a lot.
Phil...x
But, wait, there's more ... (Ginsu knives?)
Functionally, T-mount and T2 mounts are interchangeable.
T-mounts are fixed, one-piece items, and T2 is two=piece, allowing for
rotation (see below). M42 (Pentax, Pentacon thread mount) lenses have
a M42x1 thread (surprise!) while the T2 thread is M42x0.75
The T2 mount itself is in two parts - one that has the camera lens
mount (no automation of any kind) and a part that screws into the
lens. The two parts are held together by three small screws. This
allows the lens to be rotated so that the focusing guide is on the top
(or wherever you want it to be).
Registration on a T2 mount is 55mm, to allow room for the adapter, and
still match up with virtually any camera.
If your lens looks as if it has a Pentax thread, but won't screw into
your old Pentax body, it's most likely a T mount.
More on lens registrations at:
http://www.markerink.org/WJM/HTML/mounts.htm
What do you have, and what are you trying to adapt it to?
Cheers!
---
David Young,
Logan Lake, CANADA
Wildlife Photographs: http://www.furnfeather.net
Personal Web-pages: http://www3.telus.net/~telyt
Stock Photography at: http://tinyurl.com/2amll4
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