In photography, bokeh is the aesthetic quality of the blur produced in the out-of-focus parts of an image produced by a lens. Bokeh has been defined as "the way the lens renders out-of-focus points of light". Differences in lens aberrations and aperture shape cause some lens designs to blur the image in a way that is pleasing to the eye, while others produce blurring that is unpleasant or distracting . Bokeh occurs for parts of the scene that lie outside the depth of field. Photographers sometimes deliberately use a shallow focus technique to create images with prominent out-of-focus regions.
Carl Zeiss , branded as ZEISS, is a German manufacturer of optical systems, and industrial measurement and medical devices, founded in Jena, Germany in 1846 by optician Carl Zeiss. Together with Ernst Abbe and Otto Schott they built a base for modern optics and manufacturing. There are currently two parts of the company, Carl Zeiss AG located in Oberkochen with important subsidiaries in Aalen, Göttingen and Munich, and Carl Zeiss GmbH located in Jena.
Nikkor is the brand of lenses produced by Nikon Corporation, including camera lenses for the Nikon F-mount.
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.
Schneider Kreuznach is the abbreviated name of the company Jos. Schneider Optische Werke GmbH, which is sometimes also simply referred to as Schneider. They are a manufacturer of industrial and photographic optics. The company was founded on 18 January 1913 by Joseph Schneider as Optische Anstalt Jos. Schneider & Co. at Bad Kreuznach in Germany. The company changed its name to Jos. Schneider & Co., Optische Werke, Kreuznach in 1922, and to the current Jos. Schneider Optische Werke GmbH in 1998.
Advanced Photo System type-C (APS-C) is an image sensor format approximately equivalent in size to the Advanced Photo System film negative in its C ("Classic") format, of 25.1×16.7 mm, an aspect ratio of 3:2.
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.
A swivel lens is a lens that freely rotates while attached to a camera body. They are used on some compact digital and video cameras (camcorders). These lenses make it easy for a photographer to aim a camera without moving around too much. Swivel lenses come in different sizes and shapes. A swivel lens is also known as a swiveling lens, swivelling lens, and rotating lens.
The Samsung NX-mount is the lens mount used on NX series mirrorless interchangeable lens cameras by Samsung. The mount was first implemented in the Samsung NX10, and Samsung initially referred to the NX line as 'hybrid digital cameras', citing their combination of attributes of both DSLR and compact cameras.
Samyang Optics Company Limited is a Korean manufacturer of lenses, closed-circuit television (CCTV) and photographic accessories founded in 1972. Samyang lenses, all made in Masan, South Korea, include zoom and prime, and auto and fixed iris interchangeable lenses that are compatible with the Canon, Nikon, Sony, Fujifilm, Pentax, Samsung, Yashica, Olympus and Panasonic cameras, and with the T-mount system.
The SMC Pentax-DA 18-55mm f/3.5-5.6 AL lens is a standard zoom lens for the Pentax K-mount. It is often sold as a kit lens with Pentax digital SLR cameras and has a 35mm equivalent focal length of 27-82.5mm. Its optical formula is made of 12 elements in 9 groups. There are two variants of this lens:
The Samsung NX100 is a 14.0 effective megapixel APS-C crop CMOS mirrorless interchangeable lens digital camera made by Samsung. It was announced on September 14, 2010.
The Samsung NX series is a series of APS-C mirrorless interchangeable-lens cameras with Samsung NX lens mounts from Samsung Electronics, introduced in 2010.
The Samsung NX300 is a mirrorless interchangeable lens digital camera a part of Samsung NX series and a successor to Samsung NX210. It was announced in Jan 2013 along with 45mm f/1.8 2D/3D lens and is the first single-lens system capable of capturing 3D photos or Full HD movies
The Samsung NX mini is a digital rangefinder-style interchangeable lens mirrorless camera announced by Samsung on March 19, 2014.
Samsung NX1 is a 28.2 MP Wireless SMART Mirrorless Digital Camera with 16-50mm f/2.0-2.8 "S" Lens. It was announced by Samsung on September 15, 2014. It uses TIZEN OS as its main Operating System. It has 4k video recording. It has a weather-resistant magnesium alloy body, 3" tilting Super AMOLED touchscreen display, 2.36M dot OLED EVF with 5ms lag, LCD info display on top of camera, built-in 802.11ac Wi-Fi and Bluetooth, USB 3.0 interface, Hybrid AF system with 205 phase-detect points covering 90% of the frame, 15 fps burst shooting with continuous autofocus, it can output 4:2:2 8-bit 4K video over HDMI, context-sensitive adaptive noise reduction, stripe pattern AF illuminator with 15m range and optional battery grip. It was the first commercially available camera featuring back-illuminated APS-C sized sensor.
The Samsung NX 16-50mm F2.0-2.8 S ED OIS is an interchangeable camera lens announced by Samsung on January 2, 2014. It has one of the widest apertures in a zoom lens, measuring f/2.0 to f/2.8. This is narrower than the Sigma 18-35mm f/1.8 DC HSM A, but the Samsung's focal length extends to 50mm, making it more suitable for portraits without cropping.
The Samsung Galaxy Note 8 is an Android phablet smart phone designed, developed and marketed by Samsung Electronics. Unveiled on 23 August 2017, it is the successor to the discontinued Samsung Galaxy Note 7. It became available on 15 September 2017.
The Samsung Galaxy A8s is a midrange Android smartphone produced by Samsung Electronics as part of the Samsung Galaxy A series. It was announced on 10 December 2018 primarily for the Chinese market. It is also sold as the Samsung Galaxy A9 Pro (2019) in South Korea.
