> From: GMcGrath@xxxxxxx
It looks like it's made on the same principle as the hood on the new Nikon
45/2.8 that they introduced along with the FM3A. That one is pictured on the
cover and inside the March issue of Pop Photo.
In both cases, this type of hood suggests that the lens is far larger in
diameter than necessary optically for that widest aperture. The 52mm
filter size also suggests a direct Nikon competition. The same optics
should have fit a 49mm filter size (or even smaller) with a conventional
hood and then the weight would have been a bit closer to the Zuiko as
well.
My bet is that the performance is quite good.
Eric Pederson
Looking at the lenses on the site is interesting. I was wondering
how they could say that the same lens is available for the
Voigtländer rangefinder and in mounts for various SLRs. My first
question was whether the lens for SLRs had automatic aperture which I
was not really able to find. Second question that occurred to me is
that lenses for SLRs and rangefinders are usually designed
differently, especially in shorter focal lengths. Lens elements can
recess into a rangefinder body, but can't recess into an SLR because
of the mirror. Advantages in sharpness, contrast and correction are
usually cited by rangefinder makers because their lenses do not have
be made into a retrofocus design which requires extra elements and
lens maker gymnastics to achieve. Looking at the picture of the 35
mm lens for the rangefinder it seems amazingly long - nothing at all
like the comparatively flat Leica 35mm. I wonder whether Cosina when
planning their lens line decided to design them all as retrofocus
regardless of their application so that a longer lens barrel could
just be substituted on the rangefinder. Have they really designed
SLR lenses, ignoring the advantages of non-retrofocus design, and
just adapted them to a rangefinder rather than the other way around?
--
Winsor Crosby
Long Beach, California
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