Sony CineAlta HDCAM HDW-F900R, Руководство по обслуживанию

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9-3
HDW-F900R/V1 (E)
Luxmeter
Light source
Chart
Setting Illuminance (In case of using reflective-
type chart)
Measuring equipment : Luxmeter (pre-calibrated)
1. Turn on the light source that illuminates the chart and
allow it to warm-up for about 30 minutes.
2. Fix a luxmeter in front of the reflective-type chart.
Obtain an illuminance of 2000 lx uniformly over the
entire surface of the chart by adjusting the position and
angle of the illuminations.
n
Place the light source at the same height and direction
of the camera that shoots the chart surface.
Setting Luminance (In case of using transparent-
type chart)
Measuring equipment : Photometer (Minolta LS-110 or
equivalent, pre-calibrated)
1. Turn on the pattern box and allow it to warm-up for
about 30 minutes.
2. Place the pattern box such that direct light does not fall
on the chart surface.
(Alternatively, place a cover the inside of which is
painted with unglazed black, around the entire chart.)
3. Fix a photometer 1 m in front of the chart in the
pattern box.
4. Obtain the luminance of 573
±
6 cd/m
2
at the center of
the chart by adjusting the BRIGHTNESS control of
the pattern box.
n
Adjusting luminance of 573
±
6 cd/m 2 creates the same
illuminance of 2000 lx on the reflective-type gray-
scale chart with reflection of 89.9%.
Chart
Photometer
1 m