A lens which can be adjusted to give a range of different focal lengths. Most lenses in use today are zooms because they’re so much more versatile than fixed focal length (prime) lenses – you can adjust the framing without having to change the camera position. The disadvantages of zoom lenses are increased distortion and […]
The difference in magnification offered by a zoom lens and its widest and longest focal lengths. The average kit lens has a zoom range of 3x, so at full zoom objects appear 3x larger than they do when you’re zoomed right out. The Nikon P900 has a record-breaking 83x zoom.
A system developed by the great landscape photographer Ansel Adams for measuring the light levels throughout a scene and allocating them to ten brightness ‘zones’. The idea was to develop the film to a specific level of contrast that captured the full range of tones and make appropriate artistic interpretations with dodging and burning during […]
A visual warning that image highlights are being overexposed and used especially during video recording. The overbright areas are marked by moving diagonal stripes (hence zebra) leaving you to decide whether to reduce the exposure or to leave it if the highlight areas are unimportant.