8 Tips to avoid "Resolution Confusion" [ oh-so-common ]
1. 75 ppi (at full size) is fine for most art being printed at 50% or less of its original size.
2. 150 ppi works well for oils, acrylics & watercolors being printed at or near their original size (100%).
3. 300 ppi is better for making prints that are double the size of the original art (200% or more enlargement).
4. 300 ppi is usually requested by printers of magazines, posters, greeting cards, lithographs, etc. Since the reproductions are often much smaller than the original art, scanning at 300 ppi will capture much more data than is really required. But, many clients "play it safe" by having their original scanned at 300 ppi at full size anyway, and it does serve as a good archive.
1. A 24x30 scanned at 300 ppi will have enough pixels to make a 16"x20" @450 ppi or
an 8x10 @900 ppi. Solution: When reducing from the original size, a lower resolution scan may be enough.
2. You're scanning 24x30 art to print a 5x6 card and the print shop requests 300 ppi.
Solution: Scan the 24x30 at 75 ppi. You'll get 11 mb of data... 20% more than is needed for the 5x6 card at 300 ppi, which requires only 9 mb of data.
5. 300 ppi is considered a good archiving resolution for oils, acrylics and watercolors for most future uses.
Large art pieces scanned at high resolutions make files much larger than people expect.
6. 400 - 800 ppi is better to maintain the sharpness of historical documents, maps and any items with fine line work or tiny text.
7. Our maximum resolution is 1000 ppi at the original size. Larger pieces will require scanning in sections that are digitally stitched to combine the sections.
8. The Cruse System can capture up to 1.8 GB of data in one pass, depending on the size of the original.