Get Print Resolution From Your Digital Camera Images
Problem: You imported an image from your digital camera and although the physical dimensions of the image are rather large, the resolution shows up as only 72 ppi. How can you get enough resolution to print this image? Solution: Go under the Image menu and choose Image Size. Turn off Resample Image, then in the Resolution field, type the resolution you need for the specific device you’ll be printing to. When you do this, Photoshop will automatically input the Height and Width that would result from using that resolution (the image size will definitely be smaller—the higher the resolution needed, the smaller the physical dimensions of your image). All you have to do is click OK and Photoshop will do the math, creating an image in the new smaller size, with the new higher resolution. The good news is that by doing it this way, there’s absolutely no loss of quality to the file whatsoever.