Understanding Camera Resolution
The following information applies mainly to traditional DSLRs (digital single lens reflex cameras) or newer mirrorless interchangeable camera systems.
What is Image Resolution?
Image resolution refers to the amount of detail an image holds. Higher resolution means more detail and sharper image quality.
Image Resolution Overview
Resolution: Indicates image detail and clarity. Higher resolution = sharper image.
Pixels: Tiny building blocks of digital images.
Megapixel (MP): One million pixels.
300 DPI: Standard print resolution for crisp, high-quality images.
source: Wikipedia