What does DPI or resolution mean?
DPI stands for “dots per inch”. 600 DPI means there are 600 small points of detail in one linear inch of scanned material. Higher DPI means higher detail, more scan processing time and a larger resulting digital file. DPI plays no part in enhancing existing images. It only helps preserve details that remain. A 5×7 picture scanned at 600 DPI would create an image that is approximately 3000 pixels by 4200 pixels in size, or approximately 12 megapixels. We scan photos at 600 DPI. Photos larger than 8×10 are scanned at 300 DPI and slides and negatives are scanned at 3600 DPI with 48-bit color depth.
