Understanding Image Photography Resolution

Image resolution explained: Photography resolution is a measurement of image quality, so you may define resolution by how much detail is in your print. If your print has sharp detail you may consider your image to be of good resolution. If detail is blur in your image you may consider your image to have poor resolution. Good resolution is a direct result of having a large number of pixels in an image. Pixels explained: Digital images are made up of millions of small dots - each dot is called a pixel. Each dot contains a small piece of image information, and when added together with the other pixels you’ll get your final image. Print resolution is measured in pixel per inch (ppi) or in dots per inch (dpi) - both hold the same value. 300ppi means that there are 300 pixels per inch or 90,000 pixels per a square inch. What size can I print my images? A digital image that’s 1500ppi wide will print a 15-inch wide print if the print resolution is 100ppi. If you change the same image to a print resolution to 300ppi your final print size will become a 5-inch wide print. If your image file is 3000ppi wide x 2400ppi high with a print resolution 300ppi, your final print size will be 10 x 8 inch. The same file with a print resolution of 150ppi will give you a final print of 20 x 16 inch. Divide the print resolution into the pixel width or height of your image. Higher resolution should not be taken to mean that your images would be of higher quality - your images would only be of high quality if you print to the correct format. Example - if you print a 3000ppi x 2400ppi size file to a print size of 20 x 16 inch at 300ppi, the pixels may be visible resulting in a blur image.

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