The number of pixels determines the maximum size of the resulting image and its sharpness, especially when printed. The higher the resolution to start, the better the results. You can easily reduce a ...

Thirty-five years ago—in December 1975—an engineer named Steven Sasson snapped a photo with the world’s first fully digital camera at a Kodak lab. It took 23 seconds to record a 100-by-100-pixel image ...