Do you wonder what size an image or picture will print at? And whether it will be crisp enough? Here’s a tip on figuring all of this out…
You take the pixels and divide by the DPI (dots per inch) to get the size in inches. So if you have an image that is 600 pixels by 300 pixels, you divide 600 by 300 to get 2, and you divide 300 by 300 and get 1. This will give an image that is 2 inches by 1 inch.
You may be asking why 300 DPI? If you are posting an image to the web, you can use 72 DPI because clarity is not as important, and it’s much harder for someone to copy your image (because they won’t want 72 DPI). An image printed at 300 DPI is considered to be standard for most print jobs. For professional photos, you would consider printing at an even higher DPI.
Just remember…the higher the DPI, the bigger the file.
So, one more example. You have opened a photo from your digital camera in your imaging processing program. You want to resize it and print it as a 5×7. Multiply 5 inches by 300 DPI to get 1500 pixels. Multiple 7 inches by 300 DPI to get 2100 pixels. You then resize your photo to 1500 by 2100 at 300 DPI in order to print a 5×7 photo.