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Digital Image Anatomy

Digital images are made up of numbers. The fundamental particle of a digital image is the pixel—the number of pixels you capture determines the image’s size and aspect ratio. It’s tempting to use the term resolution, but doing so often confuses matters more than it clarifies them. Why?

Pixels and Resolution

Strictly speaking, a digital image in its pure Platonic form doesn’t have resolution—it simply has pixel dimensions. It only attains the attribute of resolution when we realize it in some physical form—displaying it on a monitor, or making a print. But resolution isn’t a fixed attribute.


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