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2. For measuring illumination contrast: Mount Lumidisc
to swivel head. Switch the meter ON and point Lumidisc directly
toward center of main light. Press measuring switch in EV mode and
read-out the measured value.
In the same manner, read the EV number of fill-in light. Difference
between EV numbers of main and fill-in lights becomes contrast
ratio (refer to Table 1).
3. For measuring luminance (Lux): Set ISO sensitivity to ISO 100
regardless of your film speed. Place Lumidisc parallel with the
measured surface and read EV number in the same manner as for
other measurements.
As to Lux value corresponding to the measured EV number,
please refer to Table 2.
Reflected light measurement: Mount Lumigrid
to swivel head.
Switch the meter ON and point Lumigrid directly toward part of subject
to be measured. Measure reflected light from main point of subject as
close as possible to the subject.
Use adequate care in this case that the meter shadow does not
interfere with the light to be measured.
Post-measurement calculation
1. Calculation dependent upon change of film speed can be
made by pressing either side of UP/DOWN key while depressing ISO
selecting key.
2. Calculation dependent upon change of shutter speed can be
made by pressing either side of UP/DOWN key only.
3. Conversion of measuring mode can be made by pressing F/EV
selecting key.
Measuring range: When measuring range is exceeded, F-stop or
EV number will be replaced E.o (error-over) or E.u (error-under) mark.
Measurement for movie camera: Procedure for taking measure-
ments when using movie camera is the same as for taking ambient light
measurements.
3


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