Kodak Medalist II - Focusing the Lens

lax frame assembly (figure 2) is operating properly
without binding on the view finder cover. The par- -
allax frame assembly can be seen by aiming the
view finder at a light and looking into it rather than
through it. If the parallax frame assembly is func-
tioning correctly, it will be seen to move smoothly
downward as the focusing tube assembly is moved
ou~ toward the 3 1/2-foot position. At the 3 1/2-
foot position the lower edge of the negative finder
lens frame at the front of the view finder cover
should be distinctly visible. If it is not, remove
the view finder cover and adjust the parallax ad-
justing screw (figure 5) on the parallax frame as-
sembly. After securing the proper position of the
screw, shellac the screw head to prevent it from
turning accidentally during use of the camera. The
parallax frame assembly must not be raised too
high
or it will come in contact with the top of the
view
finder cover as the focusing tube assembly is
retracted and the rectangular frame at the front
end of the assembly will be bent. Jerky movements
or lack of any movement of the parallax frame as-
sembly indicates that the assembly is binding either
on the range finder reflection guard (figure 6) or
on the view finder cover. Correction of this trouble
will require loosening the two range finder eyelet
frame screws (figure 5) and shifting the position of
the parallax frame assembly as required. Before
tightening the screws again, make sure that the
range finder eyelet lens assembly is pushed as far
toward the front of the camera as it will go and that
it is straight.
DEPTH-OF-FOCUS SCALE (See figure 2) .
If the depth-of-focus scale was disassembled
from the focusing scale frame or if it is necessary
to install a new scale, shellac the corners of the
scale to the frame.
Replace the depth-of-focus scale and the focus-
ing scale frame together on the direct view finder
cover assembly . Fasten the frame with the two
depth-of-focus scale frame screws.
FOCUSING THE LENS.
22
NOTE: The range finder mustalways be
adjusted BEFORE the lens is focused.
Refer to page 21.
Set up the camera on a firm support with the
diaphragm control ring retainer exactly 15 feet
from a large wall chart or calendar suitable for
accurate focusing.
Remove the camera back and place the ground
glass of special tool No. 501-V on the back frame
of the camera in the position of the film plane. The
ground side of the glass must be toward the lens
and the cutaway corner must be at the upper right
to allow access to the adjusting screws. Fasten the
ground glass inplace with the spring clamp. Insert
a T.B . 1. Cable Release in the shutter cable release
socket.
With the diaphragm pointer set to f /3.5, turn
the shutter speed control ring so that the red pointer
is at "B. " Cock the shutter and open it by placing
the T .B.1. Cable Release on the time position and
depressing the button.
Focus carefully on the test object by turning the
focusing tube assembly. Use a magnifying glass to
examine the image and make sure that it is the
sharpest obtainable.
Look at the focusing scale. If the 15-foot mark
is not exactly at the black index mark on the depth-
of-focus scale, loosen the range finder adjusting
screw lock stud (figure 1). This is the smaller
screw at the upper right-hand corner of the focus-
ing tube guide assembly.
If the 15-foot mark on the focusing scale is to
the left of the index mark, turn the range finder
adjusting screw (the larger of the two screws) clock-
wise until the two marks exactly coincide . If the
15-foot mark is to the right of the index mark, turn
the adjusting screw counterclockwise. Then tighten
the range finder adjusting screw lock stud.
The focusing tube stop plate should be adjusted
so that the 3 1/ 2-foot indication on the focusing dial
can reach the infra-red markon thedepth-of-focus
scale. Never allow the 3 1/ 2-foot mark to go too
far beyond the infra- red mark. This may cause the
range finder actuating lever and link assembly to
bear against the focusing cam screw and to pull off
of the lock stud. The lever link will come close to
the
screw in any case but if it should actually touch
before the 3 1/ 2-foot indication is below the infra-
red mark on the scale, the stop plate should be
readjusted so that it cannot touch. It may then be
necessary to readjust the range finder as described
on page 21.