Specifications

DEPTH-OF-FIELD PREVIEW LEVER AND SCALE
Depth of field is the range between the
nearest and farthest distances which are in
focus at a given lens aperture. If you want
to know how great the depth of field is at
a certain aperture, focus on a subject and
look through the viewfinder while moving
the Self-timer lever toward the lens, and
you will be able to preview the depth of
field.
Or, after focusing, look at the depth-of-field scale on the lens. In the photograph below, the distance scale is set at 5
meters; that is, 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 a lens opening of f/4 is to be used, the range on the distance scale ring covered within the figure 4 on the
depth-of-field scale indicates the area in focus at that lens opening. You will note from the depth-of-field scale in the
photograph that the range from approximately 4 to 7m is in focus. Note that as the lens aperture changes, the effective
depth of field also changes. For the depths of field at different apertures and distances, refer to the next page. www.4butkus.org