Canon Model 7 - Manual (Page 17)

2. When the lens aperture ring is pre set to the desired "F" stop: Turn the shutter
dial and match the aperture reading on the meter indicator window to the guide
line where the needle rests. The shutter dial should be set where it click-stops.
NOTE;
• The light meter cannot be used for " B ” and “T” exposures or when using
speedlight.
• When using the light meter, be sure that YOUR HAND DOES NOT COVER THE
PHOTOCELL.
CHANGING THE SENSITIVITY OF THE LIGHT METER. . .
Ordinarily, low sensitivity 'black dot! is used for bright outdoors. High sensitivity
(orange dot' for indoors and before or after sunset outdoors, if your subject is in so
bright that it causes the needle to scale out, or when the subject Is too dark
to give sufficient impulse to the needle, the sensitivity of the light meter is changed
by turning the sensitivity shifting knob. If the orange dot on the sensitivity shifting
knob is matched to the index mark, indicating the need of high sensitivity (because
the subject is dark), the aperture reading must be read off from the orange scale.
Conversely, if the black dot is matched to the index mark, indicating the need of low
sensitivity (because the subject is too bright), the aperture reading must be read off
from the white scale.
14
Index Mark
Orange or Black Dot