Compose And Focus - Pentax K1000 Manual

While viewing through the view-
finder, turn the focusing ring
until your subject comes into
sharp focus. Depending on the
type of focusing screen you have,
there are two ways of doing
this.
COMPOSE AND FOCUS
A cross-micropr ism focusing
system consists of a Fresnel
lens, made up of many
concentric rings, with a
microprism center underneath
t he ground glass. With this system,
when your subject is in focus,
the image in the microprism
center will be sharp. If your
subject is not in focus, the
microprism will break the
image up into many sma ll
dots.
A split-image focusing system
consists of a Fresnel lens with a
horizontally divided screen
under the ground glass. With this
system , when your camera is held
horizontally and the image is not
in sharp focus, all vertical lines
seen through the viewfinder will
appear to be divided into upper
and lower portions. To focus,
simply adjust the focusing r i ng
until the upper and lower
portions are in perfect alignment.
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