>Early F2 prduction was prone to ripping the titanium curtains out of
the
>bar, or coming unglued from the inner roller (that's right, as with
>silk/rubber OM curtains, the mighty nikon titanium curtains are glued
in
>with pliobond, or the Japanese equivalent). The mind set is that
metal
>shutter curtains MUST be better than silk/rubber. Not true. Both
types have
>their own set of problems. Titanium shutters are noisier by
comparison,
>that's for sure.
>
>
My understanding is that Nikon was the first to use Ti shutters. They
used them in their rangefinder cameras because it was the only material
they could think of that could withstand the focussed energy of the
sun, if the rangefinder camera were to be pointed directly at the sun
for any length of time. Since there was no mirror to protect the
shutter, the sun would be focussed as an intense spot on the closed
shutter curtain in a rangefinder camera. I don't know how much of a
problem this really was at the time, but they worked very hard to make
this material usable as a shutter curtain. They then continued its use
in the first F SLR cameras, since the fisheye lenses at the time
required mirror lockup, the shutter would be exposed to direct sunlight
when they were used on the camera.
Be seeing you.
Dirk Wright
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