When scanning from photos or even film material (transparency) sometimes the scan result shows a regular pattern all over the image – this can be a moir© pattern, can it?
This pattern is often due to calculation algorithms in the software (problems with high frequencies in image). Workaround 1: set SilverFast’s interpolation algorithm to “Anti Aliased” (Option > General) Workaround 2: only use optical scan resolutions. Set the “dpi”-slider in SilverFast to your desired resolution and click into the “dpi”-box at the right end of this slider. Now press the CTRL key on your keyboard and SilverFast displays the nearest optical scan resolution supported by your scanner. If the value in the entry box does not change, you selected a true optical resolution. If the value changes, however, we recommend to release the CTRL button and set the value in that box to the value you saw when the CTRL button was pressed, thus using the nearest possible scan resolution for your scan.
