Additional information:
The Tamron 135 mm f/ 2.8 T mount model 680 is a telephoto prime lens for 35 mm SLR cameras popular in the 1960-90s (via the interchangeable T / T2 mount).
It was supplied with a teleconverter. With the teleconverter attached, the focal length increases to 225 mm, and lens speed decreases to f/ 5.5. Links to online resources: Posted by: Nik_SSG Date of publication: 31.07.2011
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