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--shadow value Sets the shadow value for the images to be acquired. The device must support setting shadow values. Some devices do not support setting the shadow level. The --verbose option will generate a message that will inform whether setting the shadow value worked successfully or an error was encountered. The shadow value can be any numeric value between 0 and 255, inclusive. The shadow setting is an advanced setting that allows the device to set a maximum "dark" color that the image will use. Any color that would be darker than the shadow is equal to the shadow value. See also --highlight to set the lightest color to use in the image. Example: Acquire a BMP image named test.bmp. The color is RGB, and the shadow value used is 100. twainsave --filename test.bmp --color 2 --shadow 100 Default Setting: The shadow value that the device determines as the default. |