Camera is a indispensable item for young people to catch up with the with fashion trends in current society. A camera is a device that records images that can be stored directly, transmitted to another location, or both. These images may be still photographs or moving images such as videos or movies. The term camera comes from the word camera obscura (Latin for 'dark chamber'), an early mechanism for projecting images. The modern camera evolved from the camera obscura.
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 lenses and other accessories that are compatible with the cameras produced by other companies.
Sigma released 180 mm f / 2.8 macro lens on international consumer electronics show this year, it is the first lens with maximum aperture of f / 2.8 in the world to realize 1:1 magnification and in a 180 mm focal length. The lens has built-in Sigma OS optical Anti-Shake technology, which can provide equivalent level 4 shutter Anti-Shake compensation. F / 2.8 of the biggest aperture can not only improve the shutter speed, also may provide the shallow depth of field effect. Lens used the three were FLD (low dispersion) lenses, effectively solve the problems appeared in the pictures off color. The built-in focus lens system that will guarantee the focus lens in chief don't change.
Sigma's Super Multi-Layer Coating feature reduces flare and ghosting, and delivers sharp and high contrast images, even in backlit conditions. The incorporation of Sigma's Hyper Sonic Motor (HSM) ensures quiet and high-speed autofocus, as well as full-time manual focus override capability. The macro lens has a rounded nine-blade diaphragm to create an attractive blur to the image's out-of-focus areas. At 1:1 magnification, this lens has a focusing distance of 18.5 inches, which is a greater working distance than shorter focal length macro lenses, making it advantageous when taking pictures of highly sensitive subjects. It is also compatible with Sigma's 1.4x EX DG APO and 2x EX DG APO Tele Converters.