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The Canon Extender EF lenses are a group of teleconverter lenses made by Canon. These lenses are used between any compatible EF type lens and any of the Canon EOS line of cameras. When used with a compatible lens, they will multiply the focal length of the lens by a factor of either 1.4x or 2x, at the cost of decreasing the lens' aperture by 1 ...
Nikon 1 V1 with Nikkor VR 10-100mm f/4.5-5.6 PD-Zoom and ME-1 stereo microphone in HD-video use. The Nikon 1 Nikkor VR 10-100 mm f/4.5-5.6 PD-Zoom for the 1 series' unique CX format ( crop factor 2.7) is a Superzoom lens manufactured by Nikon, introduced in September 2011 for use on Nikon CX format mirrorless interchangeable-lens cameras.
The EF 24–105mm f/4L IS II USM lens is available in kits packaged with the EOS 5D Mk IV. On a 1.6x APS-C camera body, this lens' field of view is equivalent to that of a 38–168mm lens on a 35mm film camera; this is a very useful range, covering most normal to medium-telephoto needs.
A lens with a larger numerical aperture will be able to visualize finer details than a lens with a smaller numerical aperture. Assuming quality (diffraction-limited) optics, lenses with larger numerical apertures collect more light and will generally provide a brighter image, but will provide shallower depth of field.
The Sigma 35 mm f/1.4 DG HSM Art is a wide-angle prime lens made by the Sigma Corporation. [1] The lens was announced at the 2012 photokina trade fair. [2] The lens is produced in Canon EF mount, Nikon F-mount, Pentax K mount, Sigma's own SA mount, and the Sony/Minolta AF Mount varieties, all have the same optical formula.
The EF 35-105mm lens is a family of EF mount wide -to- normal zoom lenses manufactured and sold by Canon. There were three versions made. The first version was released in 1987 as an f/3.5 - f/4.5 aperture lens. [1] The next was released in 1991 as a f/4.5 - f/5.6 aperture lens. [2] The last version was released in 1992 as a f/4.5 - f/5.6 USM version. [3] On several recent high-end Canon EOS ...
The Canon EF 28–105 mm f/4–5.6 is an inexpensive zoom lens often included as a kit lens with Canon 35 mm single-lens reflex cameras. 28–105 mm is a standard wide to telephoto zoom range.
A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis. Lenses are made from materials such as glass or plastic and are ground, polished, or molded to the required shape. A lens ...