The Tamron site index of MF lenses only shows one version: Model 30A, made
from 1985 to 1992.
http://www.tamron.co.jp/data/a2-lens/mflens.htm
The page for the Model 30A gives some useful details, mixed in with a lot
of unintelligible (to Western eyes) stuff
http://www.tamron.co.jp/data/a2-lens/30a.htm
As an interesting aside, the 300mm f2.8 came in three versions; model 107B
(LD, non-IF, white) from 1983-1984, model 60B from 1984-1992, and 360B from
1993 to the present.
Roger Key
Moose wrote:
Well, I've never heard of different versions.
.........
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