slightly lower film speed results in slightly lighter
transparencies, preferred by some people, using a
low-wattage projector
or
a large screen .
• The
field
covered
by the exposure control cor-
responds approximately to the field covered by the
50mm
lens.
When
using the control to determine
exposure for wide-angle
or
telephoto shots, make
appropriate compensation
for
excessive differences
in brightness between the field covered by
the
con-
trol and the field covered by these lenses.
INC
IDENT
LIGHT
READINGS
In some instances it
is
advisable to measure the
light
falling
on
the subject. Press the white plastic
incident light mask, packed with the camera, over
the photocell, with the pins
of
the mask
in
the locat-
ing holes
of
the photocell; then point
the
camera
from the subject to
the
position from which the
picture will be made. Set exposure as usual.
This method
is
useful
for
floodlighted pictures,
snow scenes, and pictures against the light.
When the subject
is
inaccessible, readings can be
taken from a substitute position, illuminated simi-
larly to the subject.
27
To Next Page
Loading...
