From the course: Essential Graphic Production Techniques

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PPI, DPI, and LPI: What’s the difference?

PPI, DPI, and LPI: What’s the difference?

From the course: Essential Graphic Production Techniques

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PPI, DPI, and LPI: What’s the difference?

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- [Instructor] When it comes to image resolution, there are several terms that are used. PPI, pixels per inch, DPI, dots per inch, and LPI, lines per inch. Here's how they relate to each other. PPI and DPI are to all intents and purposes synonymous and can be used interchangeably. If we want to be pedantic, pixels when on screen, dots, as in dots of ink, when printed. But they can be used interchangeably. If we zoom in on these three versions of the sunflower, at top we have 300 pixels per inch. And as I zoom in a bit more, we should be able to tell the difference between it and the one below it, 150 pixels per inch. And then the very course resolution, 72 pixels per inch. LPI, as mentioned previously, is the number of halftone dots used to reproduce continuous tone in print. Here are some typical halftone screen frequencies. A 600 DPI laser printer uses a line screen of somewhere between 65 to 85 lines per inch. For…

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