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This is a list of smartphones with a telephoto lens that offers a focal length (35mm equivalent) of at least 100mm or "4× optical zoom" with an imaging area equivalent to a 1/3.5″ or larger sensor. Smartphone lenses are often marketed in terms of "optical zoom" [1] relative to the phone's main camera. For example, 120mm is usually referred ...
Lens controller. A lens controller is device that controls motorized photographic lens functions such as zoom, focus, and iris opening ( aperture ). [1] Lens controllers can be found in still camera photographic lenses and as stand-alone units in machine vision, remote sensing, optoelectronics systems, and security applications.
The EF 200mm USM lens is an L-series prime telephoto lens made by Canon Inc. for the EOS line of cameras. Four 200 mm primes were made: f/ 1.8, two f/ 2.8, and the most recent f/ 2.0. The 200 mm f/ 1.8 USM lens, introduced in November 1988, is the fastest 200 mm ever produced. [1] It is a large off-white lens with rear drop-in filter tray.
For this review, SPY tested more than 20 security cameras over a year, covering indoor cams, outdoor cams and video doorbells. With so much testing under our belt, we can confidently say you’ll ...
A closed-circuit television camera is a type of surveillance camera that transmits video signals to a specific set of monitors or video recording devices, rather than broadcasting the video over public airwaves. The term "closed-circuit television" indicates that the video feed is only accessible to a limited number of people or devices with ...
In everyday digital cameras, the crop factor can range from around 1 (professional digital SLRs), to 1.6 (consumer SLR), to 2 (Micro Four Thirds ILC) to 6 (most compact cameras). So a standard 50 mm lens for 35 mm photography acts like a 50 mm standard "film" lens on a professional digital SLR, but would act closer to an 80 mm lens (1.6×50mm ...
The Pentax Q series is a series of mirrorless interchangeable-lens cameras made by Pentax and introduced in 2011 with the initial model Pentax Q. [1] As of September 2012, it was the world's smallest, lightest interchangeable lens digital camera. [2] The first models used a 1/2.3" (6.17 x 4.55 mm) back-illuminated sensor CMOS image sensor.
Canon NS (1939) New Standard. A Canon S without the slow shutter speeds. Canon J (1939) J stands for Junior a non-rangefinder model. Canon J II (1946) Similar if not the same as prewar cameras. Canon S (1946) Similar if not the same as prewar cameras. Canon S II (1946) A redesign with combined range finder and viewfinder functions – two windows.
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