@ Framing
Fig. 45
4”
x
3”
frame
Fig. 46
Fig. 47
A.
OM light path
Frame
the specimen image into the 35mm frame reticle. (Fig. 45)
B. MTU light path
Frame retitles are matctied to NFK photo eyepieces 2.5X. 3.3X and
5X in this order from outer to inner. The outside reticle at each frame
indicates 35mm film format and the inside reticle indicates 4”~ 3”
format.
Picture area on the film plane within the frame
Format
35 mm
4” x 3”
Picture area
21.5 mm x 32.5 mm
65mmx85mm
@ Eyepiece Shutter
When you remove your face from the binocular tube while the camera
shutter is open for a long time, room light may enter the eyepieces,
forming an image coincident on the specimen image to be photo-
graphed. To exclude this extraneous light, pull out the eyepiece shutter
at the time of exposure. (Fig. 47)
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