Operation Manual

4
Basic Operation
3. Reflected light measurement
Reflected light measurements are made by pointing
the L-308DC's metering lens toward the subject.
Measurements are made from the camera position or
within the same view as the camera lens.
Measuring the brightness (luminance) of light reflected from the subject is
useful when subjects cannot be approached, for measuring light sources
(neon signs, etc.), and measuring highly reflective surfaces or translucent
subjects (stained glass, etc.).
To take a reflected-light measurement, hold the meter in front of the camera
and point the metering lens toward the part of the subject you want to
measure. If the subject area is small, you may have to move the meter closer
to the subject to measure it properly.
As the reflected-light lens has a 40-degree view, measurements made from
the camera position will often result in an average of all subject tones.
To measure only part of the object, move the meter as close as possible to
the part of the subject you want to measure. Take care to position the meter
so that it does not cast a shadow onto the part of the subject you want to
measure.
The lens is an important light receiving unit. Do not touch the lens or allow
it to become dirty. Wipe the meter lens with a dry soft cloth if it becomes
dirty. Never use organic cleaners (like thinner or benzene) to clean the
meter lens.
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