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The Sigma 24mm F1.4 DG HSM Art is an interchangeable wide angle lens for full frame cameras. It was announced by Sigma Corporation on February 10, 2015. A full two stops faster than most 24mm primes, it is designed to capture wide angle imagery with shallow depth of field, as one might with a medium or large format camera.
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 Sigma 24mm f/1.8 EX DG is wide-angle lens which features a fast f/1.8 maximum aperture for use in low-light situations, and macro focusing capability to a reproduction ratio of 1:2.7. It uses aspherical lens elements.
It has since been surpassed by the Canon EF 11-24mm f/4L zoom lens and the Irix 11mm f/4, a manual focus prime lens. [2] The Sigma 12-24 has low distortion even compared to less wide zooms like the Canon EF 16-35mm lens. [3] This lens is available in Canon, Nikon, and Sigma, Pentax, and Sony mounts.
Sigma 200–500mm F2.8 EX DG displayed at the 2008 photokina. ASP — Aspherical lens elements; APO — Apochromatic lens element(s), originally for "Advanced Performance Optics", not necessarily apochromatic; OS — In-lens "Optical Stabilization", analogous to Nikon VR or Canon IS
Nikon F-lens mount for use with Nikon FX format DSLRs; Rear-focussing elements allow for a non-rotating lens front, enabling easier usage of rotating filters such as circular polarisers; Dust gasket around lens mount to reduce dust entering when lens and camera are attached
The Sigma 18-50mm f / 2.8 EX DC Macro is a wide to normal angle, zoom lens made by the Sigma Corporation. The lens is produced in Canon EF mount, Four Thirds System, Nikon F-mount, Pentax K mount, the SA mount, and the Sony/Minolta AF Mount varieties, all have the same optical formula. The lens is designed for digital crop DSLR with an APS-C ...
The Sigma 8–16mm lens is an enthusiast-level, ultra wide-angle rectilinear zoom lens made by Sigma Corporation specifically for use with APS-C small format digital SLRs. It is the first ultrawide rectilinear (non- fisheye lens ) zoom lens with a minimum focal length of 8 mm, designed specifically for APS-C size image sensors. [ 1 ]