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A zoom lens is a system of camera lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed-focal-length (FFL) lens . A true zoom lens or optical zoom lens is a type of parfocal lens, one that maintains focus when its focal length changes. [1]
The C-3000 Zoom offers a 3× optical zoom lens, support for SmartMedia storage, and a 3.3 megapixel, 1/1.8-inch CCD image sensor. The camera supports automatic "point-and-shoot" type photography (P Setting), as well as three manual modes (S - Shutter Priority, A - Aperture Priority, and M - Fully Manual). It supports lighting color correction ...
There is no precise definition of the term, but lenses marketed as "standard zoom" usually cover a range of at least 30mm to 70mm in terms of 35mm equivalent focal length with an optical zoom ratio of 2.5× (e.g. 28-70mm) to 5× (e.g. 24-120mm) — the most common being 3× (e.g. 24-70mm). [1]
Over the past few years, you've likely started taking meetings over Zoom or Google Hangouts, and you've probably noticed your eyes wandering around. Exactly what you should be looking at is a bit ...
This is a list of superzoom compact cameras, also known as travel zoom cameras. [ 1 ] [ 2 ] These are small fixed-lens " point-and-shoot " digital cameras that have a high optical zoom ratio. These cameras all include a power zoom lens that retracts into the body when not in use, along with an automatic lens cover or lens cap.
Many so-called "zoom" lenses, particularly in the case of fixed-lens cameras, are actually varifocal lenses, [1] which give lens designers more flexibility in optical design trade-offs (focal length range, maximum aperture, size, weight, cost) than parfocal zoom.
It has a 3.2-megapixel CCD and a 3x optical zoom that is equivalent to a 38–114mm lens on a 35mm format camera. The lens has a respectable aperture range of f2.9 at the widest setting of 35mm and f5.0 at the longest setting of 114mm. The shutter speed range is 2 – 1/2000th second. The C-310 Zoom uses the xD-Picture Card format.
Lower-end camera phones use only digital zoom and do not have optical zoom, while many higher-end phones have additional rear cameras, including fixed telephoto lenses that allow for the simulation of optical zoom. Full-sized cameras generally have an optical zoom lens, but some apply digital zoom automatically once the longest optical focal ...