A kind of simulated zoom that is created digitally. The camera takes a small portion of the image and through a mathematical method of interpolation, resizes the image to a larger size. Since digital zoom reduces the resolution of the image, it produces results that are not as clear as optical zoom. Digital zoom, which requires no moving parts, is much cheaper to add to a camera, but it produces results that are inferior to optical zoom. Many of today’s cameras have both optical and digital zoom.