Lens (optics)
A lens is a transmissive optical device which affects the focusing of a light beam through refraction. A simple lens consists of a single piece of material, while a compound lens consists of several s...
Lens (optics) - Wikipedia
FDTD Animation of Electromagnetic Propagation through Convex Lens (on- and off-axis) Video
Finite-difference time-domain (FDTD) simulation of a half convex lens (plano-convex / positive) when a point source is located at its focal plane in both on-...
Video with a simulation of light while it passes a convex lens Video
Light goes through a lens within ZUSE's calculating space. Within the lens the light moves with a lower speed and a shorter wavelength. After the lens the li...
History of optics
Watch this and other space videos at http://SpaceRip.com Early history of the telescope from ESA's Hubblecast.
Lens (optics)
From the Discovery Channel How I make a part-time living from photography: shutterstock! http://submit.shutterstock.com/?ref=102530 I have some sports photos...
History of optics
Optics began with the development of lenses by the ancient Egyptians and Mesopotamians, followed by theories on light and vision developed by ancient Greek and Indian philosophers, and the development...
History of optics - Wikipedia
Optical lens design
Optical lens design is the process of designing a lens to meet a set of performance requirements and constraints, including cost and manufacturing limitations. Parameters include surface profile types...
Doublet (lens)
In optics, a doublet is a type of lens made up of two simple lenses paired together. Such an arrangement allows more optical surfaces, thicknesses, and formulations, especially as the space between l...
Doublet (lens) - Wikipedia
Camera lens
A camera lens (also known as photographic lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either...
Camera lens - Wikipedia
Zoom lens
A zoom lens is a mechanical assembly of lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed focal length (FFL) lens (see prime lens). A true zoom len...
Zoom lens - Wikipedia
Achromatic lens
An achromatic lens or achromat is a lens that is designed to limit the effects of chromatic and spherical aberration. Achromatic lenses are corrected to bring two wavelengths (typically red and blue) ...
Fresnel lens
A Fresnel lens (pronounced /freɪˈnɛl/ fray-NEL or /ˈfrɛznəl/ FREZ-nel) is a type of compact lens originally developed by French physicist Augustin-Jean Fresnel for lighthouses.The design allows the co...
Fresnel lens - Wikipedia
Lenticular lens
A lenticular lens is an array of magnifying lenses, designed so that when viewed from slightly different angles, different images are magnified. The most common example is the lenses used in lenticula...
Lenticular lens - Wikipedia
Aberration in optical systems
An optical aberration is a departure of the performance of an optical system from the predictions of paraxial optics. In an imaging system, it occurs when light from one point of an object does not co...
Aberration in optical systems - Wikipedia
Nikon AF-S VR 105mm f/2.8G IF-ED
The Nikon 105mm f/2.8G IF-ED AF-S VR is a macro prime lens produced by Nikon Corporation. It is compatible with FX sized sensors as well as DX format.
Nikon announced the lens on 21 February 2006,...
Nikon AF-S VR 105mm f/2.8G IF-ED - Wikipedia
Nikon F 70-300mm lens
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 (except the early 70-300G with the D40).The lens comes in four different vers...
Nikon F 70-300mm lens - Wikipedia
Canon EF 1200mm lens
The EF 1200mm f/5.6L USM is a super-telephoto prime lens that was made by Canon Inc. It uses an EF mount, and is compatible with the Canon EOS camera range. It has a focal length of 1200 mm and ...
Canon EF 1200mm lens - Wikipedia
Aperture
In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture of an optical system is the opening that determines the cone angle of a bundle of rays that...
Aperture - Wikipedia
Helios (lens brand)
Helios (Russian: Ге́лиос) was a brand of camera lenses, made in the USSR. They were usually supplied with Zenit cameras and thus usable with other M42 lens mount cameras such as the Pentax Spotmat...
Helios (lens brand) - Wikipedia
S mount
S-mount may refer to:
Canon EF 35-350mm lens
The EF 35–350mm f/3.5–5.6L USM lens is a discontinued telephoto zoom lens manufactured by Canon.This lens has an EF type mount, that fits the Canon EOS line of cameras. It was introduced in January 19...
Canon EF 35-350mm lens - Wikipedia
Double-Gauss lens
The double Gauss lens is a compound lens used mostly in camera lenses that reduces optical aberrations over a large focal plane.
The double Gauss lens consists of two back-to-back Gauss lenses (a...
Double-Gauss lens - Wikipedia
Jupiter-8 (lens)
The Jupiter-8 is 50mm / f:2 Russian camera lens made by KMZ during the Soviet era. It was made to fit a number of different camera makes. It was available in the M39 lens mount, or "Leica thread mount...
Jupiter-8 (lens) - Wikipedia
Arri PL
Arri PL is a lens mount developed by Arri for use with both 16 mm and 35 mm movie cameras. The PL stands for "positive lock". It is the successor mount to the Arri bayonet; however, unlike the bayonet...
Canon EF 135mm lens

The Canon EF 135mm f/2L USM is a short-to-medium telephoto lens. The "135/2" is mainly used for portrait photography and for indoor sports, where the lighting is often poor. The fast f/2 apertur...
Canon EF 135mm lens - Wikipedia
Canon EF 85mm lens
The EF 85mm lenses are a group of medium telephoto prime lenses made by Canon Inc. that share the same focal length. These lenses have an EF type mount that fits the Canon EOS line of cameras. This 8...
Canon EF 85mm lens - Wikipedia
Minolta Maxxum 7000
The Minolta MAXXUM 7000 (7000 AF in Europe and α-7000 in Japan) 35mm SLR camera was introduced in 1985. It was the first camera to feature both integrated autofocus (AF) and motorised film advance, th...
Minolta Maxxum 7000 - Wikipedia
Canon FD 135 mm lens
Several different models of Canon FD 135 mm lenses were produced by Canon Inc. for the Canon FD lens mount. Two were produced in the original "Old FD" style with a silver locking ring for the br...
Canon FD 135 mm lens - Wikipedia
Minolta AF 300mm f/2.8 G SSM lens
Originally produced by Minolta, and currently produced by Sony, the 300mm f/2.8 G SSM is a professional telephoto prime photographic lens compatible with cameras using the Minolta AF and Sony α lens m...