24th
September
2007
How to Clean Up Scanned Engravings and Old Photographs
“…if you are working on an engraving, you will probably find there are a lot of grey areas where the lines were close together. Assuming you used at least 1200dpi for the scan, and preferably 1600 or 2400, there should be at least four or five pixels between the lines, which should be at least two or three pixels wide…”