21
Operation of the Viewfinder
The construction of the viewfinder built into the model 600 and 600SE camera is shown in
Figure 2-4. The model 600 has framing lines for the 127mm lens only. The model 600SE has two
sets of framing lines and lens indicators for the 127mm and 150mm lenses.
Figure 2-4. Operation of the RF/VF for the 127mm and 150mm lenses
The framing lines are contained on a piece of film. Light passes through the frosted glass window
and through the film containing the framing images.
The desired bright yellow color of the framing image results from the color of the beam splitter.
Rangefinder
Window
Angle changes as focus
distance setting changes.
Movable
Mirror
Fixed Mirror
with Hole
Magnifying
Frame
Movable
Image
Fixed
Image
Eyepiece
Beam
Splitter
Objective
Lens
Subject
Light
Frosted
Glass
Metal
Mask
Film with
Framing Images
127 150
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