Image resolution refers to the amount of detail contained in a digital image, typically measured in pixels (width x height) or megapixels. It is influenced by the camera sensor, lens quality, and image processing, and determines how sharp and detailed a photograph appears, especially when viewed on screens or printed.
Higher resolution images contain more pixels, allowing for larger prints and greater cropping flexibility without loss of quality. While early digital cameras offered resolutions such as 640x480 (VGA) or 1024x768, modern cameras now produce images with many millions of pixels, delivering significantly improved clarity and print quality. Understanding image resolution helps photographers choose the right camera and settings for their intended use, whether for web display, social media, or high-quality prints.