This article is from the Yashica SLR FAQ, by cg@evrl.xs4all.nl (Cees de Groot) with numerous contributions by others.
A warning about telephotos: Yashica came with better designs for the
135, 200 and 300 lenses (less weight, more compact, better optical
quality) relatively quick after the introduction of the original
lenses. As long as both variants were available, the newer ones were
marked with a C (for compact). However, as soon as the old lenses were
sold out, they dropped the C. Therefore, when buying a telephoto
without the C, you either have a very old one or a recent one (and you
really want the latter). The best advise is to use this list and check
the measurements when buying second-hand telephotos.
Desc L-G Amin Dmin Filt Size Wght Q Cmt 135/2.8DSB 5/4 22 1.8 55 64x72 420 2 135/2.8ML 5/4 22 1.5 55 65.5x92.5 540 1 135/2.8MLC 5/4 22 1.5 52 63x75 420 2
 
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