Re: SMC-A 1:3.5 35-105--As great as it's supposed to be?

[Alan Chan]

I don't have the 'A' lens manual, but A35-105/3.5 & A70-210/4 are true zooms 
which maintain focus when zoomed. I had 2 of each back then, and was very 
picky so I looked at every detail of my hardwares.

Alan Chan
http://www.pbase.com/wlachan
It may be vari-focus. The 1983 operation manual for this lens states "When
the focal length of a zoom lens is changed by zooming, a slight shift of
focus is unavoidable. To obtain accurate focus with zoom lenses, first set
the lens at the desired focal length, then focus on the subject before
actual shooting." This manual covers many of the classic SMC "A" zooms such
as 24-50mm f/4, 28-135mm f/4, 35-70mm f/4, 35-105mm f/3.5, 70-210mm f/4,
etc.
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