Setting Preferences and Scanning with ScanGear MF3-34Scanning3■ [Gamma]By clicking , you can access the [Gamma] dialog box.The gamma allows you to adjust the brightness of the image viewed on thecomputer monitor to the brightness of the original document. The default is 2.2. Youwill have to change this value if you are using a monitor with a different gammavalue. When you set the monitor’s gamma value, the scanner’s gamma value willautomatically be displayed in the formula (reciprocal equation of the monitorgamma value) below.1/ monitor gamma value = scanner gamma valueThe gamma is active if [Color] or [Grayscale] is selected in [Color Mode].To adjust the gamma diagrammatically, press .NOTE• The monitor has characteristics (gamma values) for reproducing colors. The gammavalue of an average monitor is between 1.4 and 2.2, and reproduces colors in asomewhat darker way than the original document.Consequently, to correct the difference between the color in the original image and thereproduction of the color by the monitor, you may need to correct the gamma value.• For the monitor’s gamma value, refer to the documentation of your monitor, or contact themanufacturer of your monitor.[Channel] Adjust the elements of grayscale when [Color Mode] is set to[Grayscale]. Selects a color to adjust either [Red], [Green], or [Blue],or select [Master] to adjust the three colors together when [ColorMode] is set to [Color].
