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The sequence of lens designations may differ in literature. See also full list of Nikon designations, Sigma designations, Tamron designations and Tokina designations.. Nikon AF-S/Sigma HSM/Tamron USD or PZD: The lens contains an integrated ultrasonic focus motor based on piezoelectricity, which enables quiet or low noise autofocus operation.
The autofocus sensor(s) and electronics are actually in the camera body, and this circuitry provides electrical power and signals to a motor inside the lens that adjusts the focus. (Some older autofocus systems are based on a motor in the camera body and using a mechanical connection to the focus mechanism in the lens.) There are two different ...
First Nikon DSLR with in camera High Dynamic Range mode (Built-in Camera HDR). 3.0-inch (76 mm) articulated 921,000-dot LCD. Live View shooting mode with Contrast Detect and face priority auto focus (activated with a dedicated button). Continuous Drive up to 4 frames per second. 3D Color Matrix Metering II with Scene Recognition System.
The Panasonic Leica DG Vario-Elmar 100–400 mm f / 4.0-f / 6.3 lens is a digital compact telephoto zoom lens for Micro Four Thirds system cameras. It is a varifocal lens branded with the German label Leica, but is currently manufactured in China by Panasonic, previously Japan.
The focus itself may be adjusted in a variety of ways. Larger view cameras and the like slide the lens closer or further from the film plane on rails; on smaller cameras, a focus ring on the lens is often rotated to move the lens elements by means of a helical screw. Other systems include levers on the lens or on the camera body.
Manual focus is generally in release priority – AF is neither detected nor set. Note that these "priority" modes should not be confused with the same word in exposure modes. Focus priority can also be used for the trap focus trick: to take a picture only when a subject hits a focus point, by using AF to detect focus but not set it.
The EF 100–400 mm f / 4.5–5.6L IS USM is a professional EF mount telephoto zoom lens manufactured by Canon Inc. The first version of this lens was announced in September 1998, and an updated version was announced in November 2014. It is a high performance telephoto lens most often used for sports and wildlife photography.
An Arri 35mm film camera with a follow focus mechanism mounted to a zoom lens. Pulling focus using a follow focus device. A follow focus is a focus control mechanism used in filmmaking with film cameras and in television production with professional video cameras. It helps the camera operator be more efficient and precise.
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