Zooming on your digital camera involves getting a closer view of far-away subjects. Optical zoom gets up close and personal by using an actual lens adjustment. A zoom lens is a mechanical assembly of lens elements for which the focal length can be Early forms of zoom lenses were used in optical telescopes to provide continuous variation of the magnification of the image, and this was first. However, such numbers don't always tell the entire story, especially when looking at zoom lenses on a digital camera. Manufacturers measure zoom capabilities of digital cameras in two configurations: optical zoom or digital zoom. With most digital cameras, the zoom lens moves.
See our updated list of the best and highest optical zoom cameras from Canon, Sony, Panasonic, Nikon and more. Optical zoom is a variable focal length lens, like a mm or mm lens. In an APS-C sensor DSLR camera, the standard or prime focal length is 35mm. An explanation of the differences between digital zoom and optical zoom.
optical zoom. Changing the focal length of a camera by adjusting the physical zoom lens. All zoom lenses in film cameras and digital single lens reflex (DSLR) . On a digital camera, optical zoom is a true zoom feature.