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OD | |
Larger values of OD (Optical Density) result in a higher resolution and brighter images. The OD value equals the integration time per line of the scanner. Be aware that higher OD values lead to a non linear increase of scan time. The enhanced OD-modes give you the possibility of getting a more detailed image, because a line is scanned two times and the data is mixed togeather. This modes are only available for grayscale images. |
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Brightness | |
The brightness makes the image brighter which may result in a loss of image data when the image gets to bright. | |
Halftone Maps | |
As halftone mode you may only select which halftone map to be used use for scanning. The number of gray levels gives you an idea of how many different maps are used. The more grays you use the better the image quality could be. | |
Calibration | |
With these switches you can decide whether the scanner should calibrate the ADC (Analog Digital Converter), the RAM (Random Access Memory) or preset with factory defaults prior to the scan. If no switch is marked the last values (e.g. Power Up Calibration) are used. |
Note: This features enhances or manipulates image data before they are transferred into the computer system. Therefore there is no way to revert this conversions, than to repeat the scan with different values. This may be faster than a software operation on images.