Nikon FM2 User Manual
Page 50
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To change focusing screens, follow this procedure:
1. Remove the lens from the camera body.
2. Slip the small tip of the special tweezers (that come with the
optional screens) under the focusing screen release latch 0
at the top front of the mirror box casting and pull outward to
spring open the holder.
3. Take the screen out by grasping the small tab with the tweez
ers.
4. Carefully position another screen in place with the flat side
facing down and the side with the tab facing up.
5. Then push the front edge of the holder upward with the tweez
ers until it clicks into position.
Note:
To avoid getting smudges or fingerprints on the screen’s optical
surface, do not handle the screen with your fingers.