Juan Buhler <[EMAIL PROTECTED]> wrote:
> A few days ago I inquired about a 39mm to 42mm adapter because
I
> wanted to try an old Industar Zenit lens in the ist D. Well,
Shel
> loaned me his, so behold this anachronism, the black tape
special
> edition soviet * ist D:
>
> http://www.flickr.com/photos/[EMAIL PROTECTED]/1990444/
> http://www.flickr.com/photos/[EMAIL PROTECTED]/1990443/
> http://www.flickr.com/photos/[EMAIL PROTECTED]/1990442/
>
> Anyway, as it is, the lens doesn't seem to focus to infinity,
even
> though it should (it is an SLR lens, and there are adapters
for M42
> made to be used with it). It makes for a nice portrait lens
though.
Hi Juan,
If the adapter is the black ring I can see between the lens and
the camera, well... my guess is that is not supposed to work at
infinity. The 39mm to 42mm adapter I know (I own one) is a
simple, double threaded ring that you screw on the lens and then
you mount the combo in the 42mm to K adapter so that it (the 39
to 42 adapter) completely disappears to the view. The 39x1
lenses have a mount to film plane distance of 45,5mm, exactly
like the K mount and the 42x1 lenses, which means that only an
adapter that allows the lens to be mounted in direct contact to
the camera mount will work at infinity (I guess you should know
that, so sorry for the pedantry...)
Ciao,
Gianfranco
=====
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