(3) When the camera cannot be centered horizontally with respect to the
subject because of an obstruction, centering of the subject on the ground glass
may be obtained by sliding the front or rear frame, or both, with respect to
its carriage. Slide the front or rear frame as follows:
(a) Loosen the respective slide
and swing lock knob 1 , (fig 1-37).
(b) Gently slide the front or
rear frame to the right or left, as
desired, on its respective carriage.
(c) After adjustment is made,
tighten the respective slide and
swing lock knob 1 .
NOTE: The following camera controls are used for 3 dimensional subjects.
They normally are not required for copy photography.
controls are available on the camera and in certain circumstances may be
(4) To place the plane of sharp focus of the lens in the most advantageous
relationship to the subject, use the swings and tilts of the front frame. Tilt
the camera front frame as follows:
(a) Loosen the front pivot lock
knob 2 , (fig 1-38).
(b) Tilt the front frame forward
or backward to the angle desired.
(c) After the tilting adjustment
is made, tighten the front pivot
lock knob 2 .
Pivot Lock Knob.