Understanding Image Photography Resolution

Resolution is a term used a lot in photography these days - regardless which type of photography you do, or which type of camera you use, understanding image resolution, pixels and the different properties attributed to them is so important. Whether you are printing, scanning or sending an image by e-mail, you need to understand and know how to keep your images sharp and preserve as much detail as possible in your final print. This topic does cause some confusion, so I hope the following will help. 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. 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.

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