User’s Manual
4-18
Brightness
Adjusts the lightness or darkness of an
image. The higher the value, the brighter
the image. Drag the slider to the right or
left to increase or decrease the brightness.
The range is from –100 to +100.
Contrast
Adjusts the range between the darkest and
the lightest shades in the image. The
higher the contrast, the bigger the different
grayscale. Drag the slider to the right or
left to increase or decrease the contrast.
The range is from –100 to +100.
Brightness: -50 Brightness: 0
(Normal)
Brightness: +50
Contrast: -50
Contrast: 0
(Normal)
Contrast: +50
Summary of Contents for AD 250F
Page 1: ...Document Scanner User s Manual Regulatory model DL 1409B Avision Inc...
Page 24: ...User s Manual 3 6 5 Verify that the paper guides are aligned with the edges of the stack...
Page 39: ...User s Manual 4 5...
Page 48: ...User s Manual 4 14 Error Diffusion Image Dynamic Threshold Dynamic Threshold AD...
Page 51: ...User s Manual 4 17 Normal Photo Document Threshold 230 Normal Photo Document Threshold 230...
Page 64: ...User s Manual 4 30 The Compression tab dialog box...
Page 68: ...User s Manual 4 34 The Color Dropout dialog box...
Page 128: ...User s Manual 7 8 3 Close the reverse roller Cover 4 Close the ADF cover...