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Reproduced for Historical & Reference purposes by Paul M. Provencher -
http://whitemetal.com
13
Shutter
Turn the shutter speed dial clockwise or
counter-clockwise to the shutter speed desired.
The shutter speed may be set either before or
after cocking the rapid wind lever. As you cock
the shutter by turning the rapid wind lever, the
"cocked" indicator turns red showing that the
shutter is cocked.
The indicator window blacks out as you trip
the shutter button. For use of the X setting
on the shutter speed dial, refer to page 18.
With the shutter speed dial set on B (bulb),
the shutter will stay open as long as you
depress the shutter button. As you release
your finger from the shutter button, the
shutter closes. When a long exposure is
desired while using the B setting, attach a
shutter release cable with a locking device to
the shutter button. This will permit a "Time"
exposure.
Cautions
1 At slow speeds - slower than 1/30 - support
your camera rigidly or use a tripod to prevent
movement of your camera.
2 To protect the shutter mechanism, trip the
shutter release before putting the camera out
of use for any extended period.
Depth-of-field guide
If you want to know how great the depth of
field is at a certain aperture, look at the
depth-of-field guide. In the above
photograph, the distance scale is set at 5
meters…the lens is focused on a subject 5
meters away. The calibrations on each side
of the distance index correspond to the
diaphragm setting and indicate the range of
in-focus distance for different lens apertures.
For example, if the lens opening of f/8 is to
be used, the range on the distance scale ring
covered within the figure 8 on the depth-of-
field guide indicates the
area in focus at the lens opening. You will
note from the depth-of-field guide in the
photograph that the range from
approximately 10 to 25 feet is in focus. Note
that as the lens apertures change, the
effective depth of field also changes. For the
depth of fields at different apertures and
distances, refer to page 14 ~ 15.
Depth of field is the range between the
nearest and farthest distances which are in
focus at different lens apertures.