Additional information:
The Tamron 21 mm f/ 4.5 Adapt-A-Matic is an ultra-wide angle prime lens for 35 mm SLR cameras popular in the 1960-70s (via the interchangeable Adapt-A-Matic bayonet).
Rear filters diameter is 17 mm.
There are three versions of this lens, the last one features a rubber-coated focus ring and a plain aperture ring (see photos).
Links to online resources: Posted by: Nik_SSG Date of publication: 29.07.2011
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