Sigma Corporation is a Japanese company, manufacturing cameras, lenses, flashes and other photographic accessories. All Sigma products are produced in the company's own Aizu factory in Bandai, Fukushima, Japan. Although Sigma produces several camera models, the company is best known for producing high-quality lenses and other accessories that are compatible with the cameras produced by other companies.
A kit lens is a "starter" lens which can be sold with an interchangeable-lens camera such as a mirrorless camera or DSLR. It is generally an inexpensive lens priced at the lowest end of the manufacturer's range so as to not add much to a camera kit's price. The kit consists of the camera body, the lens, and various accessories usually necessary to get started. A kit lens can be sold by itself outside of a kit, particularly the ones that are moderately expensive; for instance a kit lens included in a prosumer camera kit is often marketed as an upgrade lens for a consumer camera. In addition, retailers often have promotions of standalone low-end camera bodies without the lens, or a package that bundles a body with one or two more expensive lenses.
The Nikon F-mount is a type of interchangeable lens mount developed by Nikon for its 35mm format single-lens reflex cameras. The F-mount was first introduced on the Nikon F camera in 1959, and features a three-lug bayonet mount with a 44 mm throat and a flange to focal plane distance of 46.5 mm. The company continues, with the 2020 D6 model, to use variations of the same lens mount specification for its film and digital SLR cameras.
The Pentax K-mount, sometimes referred to as the "PK-mount", is a bayonet lens mount standard for mounting interchangeable photographic lenses to 35 mm single-lens reflex (SLR) cameras. It was created by Pentax in 1975, and has since been used by all Pentax 35 mm and digital SLRs and also the MILC Pentax K-01. A number of other manufacturers have also produced many K-mount lenses and K-mount cameras.
Tokina Co., Ltd. is a Japanese manufacturer of photographic lenses and CCTV security equipment.
The Nikon DX format is an alternative name used by Nikon corporation for APS-C image sensor format being approximately 24x16 mm. Its dimensions are about 2⁄3 those of the 35mm format. The format was created by Nikon for its digital SLR cameras, many of which are equipped with DX-sized sensors. DX format is very similar in size to sensors from Pentax, Sony and other camera manufacturers. All are referred to as APS-C, including the Canon cameras with a slightly smaller sensor.
Nikon F 80-200mm lens refers to several generations of single-lens reflex telephoto zoom lenses for made by Japanese camera manufacturer Nikon.
The 70-300mm lens is a telephoto zoom lens made by Nikon. The lens has an F-mount to work with all the SLRs line of cameras, although the more recent AF-P lenses will not focus on film SLRs or older DSLRs.
The Nikon AF-S DX VR Zoom-Nikkor 18-200mm f/3.5-5.6G IF-ED is an image stabilised superzoom lens manufactured by Nikon for use on Nikon DX format digital SLR cameras. It provides a single-lens "walk-around" solution for wide-angle through to telephoto shots, as well as close-up photography.
The 55-200mm AF-S lens is a medium telephoto zoom lens manufactured by Nikon for use on Nikon DX format digital SLR cameras. It comes in three variants:
The 18-55mm f/3.5-5.6G AF-S Zoom-Nikkor lens is a midrange zoom lens manufactured by Nikon for use on Nikon DX format digital SLR cameras. Often included as a kit lens on entry-level DSLRs, it also can be purchased separately from the camera body. Nikon first introduced the lens in 2005 and has provided three subsequent updates. Following are the four variants as of 2014:
The Nikon AF-S DX Zoom-Nikkor 16-85mm f/3.5-5.6G IF-ED VR is a wide to medium telephoto zoom lens produced by Nikon Corporation for its Nikon DX format digital SLR cameras.
The AF-S DX Nikkor 18-105mm f/3.5-5.6G ED VR is a superzoom lens manufactured by Nikon, introduced in August 2008 for use on Nikon DX format digital SLR cameras. This lens is sold as a kit lens for the Nikon D90, Nikon D7000, Nikon D5100, Nikon D5200 and Nikon D3200 cameras, but it also can be purchased separately from the camera body.
The Nikon 1 series is a discontinued camera line from Nikon, originally announced on 21 September 2011. The cameras utilized Nikon 1-mount lenses, and featured 1" CX format sensors.
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 zoom lens with a minimum focal length of 8 mm, designed specifically for APS-C size image sensors. The lens was introduced at the February 2010 Photo Marketing Association International Convention and Trade Show. At its release it was the widest viewing angle focal length available commercially for APS-C cameras. It is part of Sigma's DC line of lenses, meaning it was designed to have an image circle tailored to work with APS-C format cameras. The lens has a constant length regardless of optical zoom and focus with inner lens tube elements responding to these parameters. The lens has hypersonic zoom autofocus.
The 18-300mm f/3.5-6.3G lens is a telephoto superzoom lens manufactured by Nikon for its line of DX DSLR cameras.
The 55-300mm f/4.5-5.6G AF-S lens is a telephoto superzoom lens manufactured by Nikon for its line of DX DSLR cameras.
The 18-300mm f/3.5-5.6G ED VR is a telephoto superzoom lens manufactured by Nikon for its line of DX DSLR cameras.
Nikon Z-mount is an interchangeable lens mount developed by Nikon for its mirrorless digital cameras. In late 2018, Nikon released two cameras that use this mount, the full-frame Nikon Z 7 and Nikon Z 6. In late 2019 Nikon announced their first Z-mount camera with an APS-C sensor, the Nikon Z 50. In July 2020 the entry level full-frame Z 5 was introduced. In October 2020, Nikon announced the Nikon Z 6II and Nikon Z 7II, which succeed the Z 6 and Z 7, respectively. The APS-C lineup was expanded in July 2021, with the introduction of the retro styled Nikon Z fc, and in October 2021, Nikon unveiled the Nikon Z 9, which effectively succeeds the brand's flagship D6 DSLR. The APS-C lineup was further expanded with the Nikon Z 30, announced at the end of June 2022.
![Tamron SP AF 17-50mm
f/2.8 XR Di II LD Aspherical [IF] (model A16NII) with Nikon D50 Nikon D50 with Tamron 17-50mm f2.8.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/b/bb/Nikon_D50_with_Tamron_17-50mm_f2.8.jpg/300px-Nikon_D50_with_Tamron_17-50mm_f2.8.jpg)
![Tamron AF 18-250mm
f/3.5-6.3 Di II LD Aspherical [IF] Macro (model A18NII) Tamron 18-250mm f3.5-6.3 A18.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Tamron_18-250mm_f3.5-6.3_A18.jpg/300px-Tamron_18-250mm_f3.5-6.3_A18.jpg)
