On Wed, 4 Apr 2001, Kelton Rhoads wrote:
> No need to adjust the position of the focus screen or the rails. I
> believe Olympus specifies spacers (washers) to be used between the front
> plate and the body as needed for fine focus correction. Also there are
> spacers on which the pentaprism rests that are interchangeable. Perhaps
> John H or Mark D can tell us why . . . is that for "focusing" the
> pentaprism/viewfinder? My guess is yes.
Yes, there are spacers between the frame the pentaprism sits in and the
front casting. In order to make that adjustment, a special collimater
is needed. The spacers are in increments of 1/100mm so the measurement
is critical and can only be measured using a collimater. The purpose of
the spacers is to adjust the focus point of the screen. I don't have a
collimater so I've never actually tried to make this adjustment.
-mark
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