Question 1

What is image resolution?

Accepted Answer

Image resolution describes the amount of detail an image holds, measured in pixels or dots per unit length.

Question 2

What resolution do I need for printing?

Accepted Answer

For high-quality prints: 300 DPI is standard for photos and magazines, 150 DPI works for viewing at arm's length, and 72 DPI is only suitable for web/screen display.

Question 3

Is DPI the same as PPI?

Accepted Answer

No. PPI refers to screen pixels, while DPI refers to printed dots. An image might be 72 PPI on screen but printed at 300 DPI for quality output.

Question 4

How do I calculate print size from pixels?

Accepted Answer

Divide pixel dimensions by DPI. A 3000×2000 pixel image printed at 300 DPI = 10×6.67 inches. At 150 DPI, the same image prints at 20×13.3 inches.

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