In film and photography, a prime lens is a fixed focal length photographic lens (as opposed to a zoom lens), typically with a maximum aperture from f2.8 to f1.2. The term can also mean the primary lens in a combination lens system.Confusion between these two meanings can occur without clarifying context. Alternate terms, such as primary focal length, fixed focal length, or FFL are sometimes used to avoid ambiguity.
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👉 Prime lens in the context of Zoom lens
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 (prime lens).
A true zoom lens or optical zoom lens is a type of parfocal lens, one that maintains focus when its focal length changes. 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.
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Prime lens in the context of Fujifilm X100
The Fujifilm X100 is a series of digital compact cameras with a fixed prime lens. Originally part of the FinePix line, then becoming a member of the X series from Fujifilm, the X100 series includes the FinePix X100, X100S, X100T, X100F, X100V, and X100VI. They each have a large image sensor and a 23 mm lens (35 mm equivalent angle of view in full frame format). All six cameras have received generally positive reviews.
The Fujifilm FinePix X100 was initially shown at the Photokina show in September 2010 and was subsequently introduced in February 2011. It was the first model in the Fujifilm X-series of cameras and has since been joined by numerous models. It is superseded by the Fujifilm X100S.