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D4211908G
● Setting
- Set photometric area size for measuring luminance
Set the following value to “ALCPhotometricAreaSize” register. The setting value is Enumeration type.
setting value
photometric area size
Full (*)
100% (Full pixel)
Medium
64% (H: 80% x V: 80%)
Small
4% (H: 20% x V: 20%)
* initial factory setting
Full = 100% (H:100% x V:100%)
Medium = 64% (H:80% x V:80%)
Small = 4% (H:20% x V:20%)
Fig. ALC Area
- Set a value of the reference luminance
Set the following value to “ALCReferenceLuminance” registers. These setting values are Integer type.
An Image luminance at ALC operation converges on a reference luminance.
(at ALCExposureValue = 0 [eV]).
ReferenceLuminance
setting value
Minimum
0
Maximum
255
* initial factory setting = 84