> As John noted, in the shop we first set "infinity" on the lens to the film
> plane using a collimator, but unless the camera has been dropped or the
lens
> focus setting disturbed, it shouldn't be off. Then we adjust the
> rangefinder.
>
> The "short" adjustment almost never needs to be changed unless someone has
> moved it first. Infinity is adjusted by turning the screw on the bottom
of
> the rangefinder revealed when the plug above the film rails is unscrewed.
>
> If your horizontal is off, that's a bit more difficult -- so much that if
> it's just a little off, don't bother! You'll want to adjust that first
> before adjusting the rangefinder's infinity setting since this will affect
> both horizontal and vertical (distance) adjustments. As a practical
matter
> you'll want to remove the top cover and the plate that shows the speeds in
> the finder to get to the adjustment as well.
>
> The horizontal adjustment is a "-" screw seen through the top of the frame
> that holds the smaller 45 degree moving mirror. It will be sealed. You
> will want to soak it with solvent (acetone, MEK, etc.) to remove as much
as
> the sealant as possible, then soak it some more. Then using the largest,
> sharpest screwdriver that will fit, unscrew the adjustment, being careful
> not to damage the head -- work slowly, firmly, and carefully! Go ahead
and
> unscrew it a ways so you can clean off the threads a bit, then screw it
back
> down.
>
> Now turn it until your horizontal lines line up. Sometimes I'll turn the
> camera on end (vertically) and check it that way. You'll find it to be a
> very delicate adjustment -- it may be just a little off, but if you feel
the
> screw turn, it will be too much! You will swear that all you did was
> _think_ of turning the screw, and that will be just right!
>
> Good luck!
Wow!
Here's hoping the test roll results are okay and the thing needs no
adjustments. But I'll be keeping this information for possible future
tinkering, but only if absolutely necessary.
Thanks,
Wayne
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