From the course: Inkjet Printing for Photographers
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Understanding pixels, printer dots, and resolution - Photoshop Tutorial
From the course: Inkjet Printing for Photographers
Understanding pixels, printer dots, and resolution
A digital image is made up of a bunch of colored picture elements, or pixels. Line these colored pixels up in a grid, stand far enough away from them, and you've got what appears to be a continuous-tone image. It's really just like making a picture by using colored pencils to fill in squares on a piece of graph paper. The difference is that your typical digital image has millions of squares and each square can be any one of millions and millions of colors. Each of those millions and millions of colors has a number associated with it. So to store an image, all your camera has to do is decide what color each pixel should be and then sock away the appropriate numbers. Change the number for a particular pixel and you change its color. Now as we talked about earlier, an inkjet printer works by spraying colored dots at a page. However, your printer might only have, say, eight different ink colors available. So a single dot of ink can only be one of eight different colors. A pixel in your…
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Contents
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Understanding pixels, printer dots, and resolution2m 44s
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Understanding resolution2m 33s
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Defining resampling and interpolation3m 41s
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Understanding where resizing fits into your workflow2m 12s
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Defining native printer resolution2m 39s
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Understanding the relationship between viewing distance and print size2m 1s
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Reducing image size in Photoshop9m 11s
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Cropping to a specific size and resolution using Canvas Size4m 34s
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Cropping to a specific size and resolution using the Crop tool5m 15s
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Enlarging an image in Photoshop7m 7s
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Creating a triptych3m 55s
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Creating a triptych using Automator on a Mac4m 5s
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Exploring the aesthetics of print size4m 39s
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