This article is from the Yashica SLR FAQ, by cg@evrl.xs4all.nl (Cees de Groot) with numerous contributions by others.
The following is a list of lenses we know off. If I have performance
data, I'll give them a note, ranging from 1 (``this really is a Sigma
lens in disguise'') to 3 (``average Yashica stuff'') to 5 (``why
didn't they stamp Carl Zeiss T* on this one?''). Completely
subjective, of course, give feedback if you disagree and give notes
where I didn't do it. Don't forget that this notes are not necessarily
my own opinion - a lot of it is based on hearsay (especially when I
don't own the lenses myself :-)).
In order to save space, I skimped on the table headers. Here is an
explanation:
Desc
Description: focal length/largest aperture/coating.
L-G
Lenses/groups.
Amin
Smallest aperture.
Dmin
Shortest focusing distance (m).
Filt
Filter thread diameter (mm).
Size
Phyiscal size: diameter x length.
Wght
Weight (g).
Q Subjective quality assessment.
Cmt
Comments, numbers refer to list below table.
Note that Yashica designates their stuff as ``ML 2,0/50'', whereas I
use ``50/2,0ML''. I think this makes it easier to quickly find a lens
you are looking for.
 
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