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6a. FOOTAGE COUNTER
This indicates the footage still available, both in frames and in feet. The
counter automatically resets to zero when the film is unloaded.
6b. GROUND-GLASS FOCUSING KNOB
This makes it possible to interpose or to retract a ground glass screen
between the eye and the lens. The advantage of the screen is that it gives
the operator an accurate appreciation of focus and the depth of focus
available with the aperture used. The knob located to the left of the frame
counter can retract the ground glass. Use the ground glass when
shooting with a low f-stop for fine focus situations and pull the ground
glass away when shooting with a high f-stop for a clearer view.
Note: The
gritty view of the ground glass does not expose on film.
