∙Luminance (Lux) measurement
a. Mount Lumidisc | to light sensor | in the same manner as | |
Lumisphere. |
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b. Place Lumidisc | parallel with the measured surface. | ||
c. Press stopper button | and read meter scale footcandle | ||
indication |
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d. Multiply this value by 10.76 to obtain lux. |
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Example: 80 x 10.76 = 860.8 lux |
| then multiply | |
If meter deflects beyond scale, insert High slide | |||
footcandle indication by 32. |
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Example: 80 x 32 = 2560 footcandles 2560 x 10.76 = 27545.6 lux
a. Mount Lumigrid
sensor 
in the same manner as Lumisphere.
b.Set sensitivity value of employed film. Setting is performed in the same manner as for incident light
measurement. c. Point Lumigrid
toward 'part of subject to be measured.
d.As close as possible to the subject, measure reflected light from main point of subject. Use adequate care at this time that meter shadow etc. does not interfere.