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Most consumer zoom lenses do not maintain perfect focus, but are still nearly parfocal. Most camera phones that are advertised as having optical zoom actually use a few cameras of different but fixed focal length, combined with digital zoom to make a hybrid system. TV camera and Canon DIGI SUPER 86 II zoom lens with 86× magnification
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 ...
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.
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]
Likewise, the Canon SX620 (compact camera) and G3 X (bridge camera) both have a 25× optical zoom, but the G3 X’s sensor is over 4 times as large as the SX620’s. Superzoom compact cameras have reached up to 40× optical zoom , whereas bridge cameras have reached up to 125× optical zoom .
A few have optical zoom, and several have a few cameras with different fields of view, combined with digital zoom as a hybrid zoom feature. For example, the Huawei P30 Pro uses a periscope 5x telephoto camera with up to 10x digital zoom, resulting in 50x hybrid zoom. [15] An external camera can be added, coupled wirelessly to the phone by Wi-Fi ...
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