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HH490 User Guide
Example:
Exposure at 7874E with fluorescent
lighting:
Exposure at 100E with fluorescent lighting:
G - Gain
Gain is used in Manual Style only (2P). Like a volume control, the gain modifier
boosts the signal and multiplies the pixel value. As you increase the gain, the
noise in an image is also amplified.
1G
No gain
(default)
2G
Medium gain
4G
Heavy gain
8G
Maximum gain
Example:
Gain at 1G:
Gain at 4G:
Gain at 8G:
W - Target White Value
Sets the target for the median grayscale value in the captured image. For
capturing close-up images of high contrast documents, a lower setting, such as
75, is recommended. Higher settings result in longer exposure times and brighter
images, but if the setting is too high, the image may be overexposed. Target White
Value is only available when using Photo Style (1P).
(Default = 125)
n
W
Range: 0 - 255
