Coarse Focusing Procedure
a. Attach the focusing cloth under the two focusing cloth clips (figure
5) on the top sides of the rear frame.
b. Depress the cocking lever (figure 7) until it latches in the cocked
c. Set the lens opening selector to the lowest f/number on the f/stop
scale to provide maximum lens opening during focusing.
d. Remove the front lens cap from the lens.
e. Depress the focus button to open the shutter.
The shutter will remain open until the cocking lever is depressed.
f. Loosen the front and rear carriage lock knobs enough to allow the
front and rear carriages to slide on the monorail bed when the front and
rear carriage adjust knobs are rotated.
g. Increase the distance between the front carriage and rear carriage
by turning the carriage adjust knobs until the objective or scene to be
photographed appears on the ground glass.
h. To produce the desired image on the ground glass, the height, angle,
and direction of the camera may have to be changed. Use the tripod controls
[(1) through (4) below] as required.
(1) To initially adjust the camera height, loosen the leg thumbscrews
(figure 6) and extend or retract the telescoping legs as required; tighten
leg thumbscrews securely after height adjustment is made.
(2) For additional height adjustment, loosen the center lock post
knob and slide the center post up or down as required. After obtaining the
desired height adjustment, tighten the center post lock knob securely.