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...
Spider eyes inspire a new kind of depth-sensing camera
As robots and gadgets continue to pervade our everyday lives, they increasingly need to see in 3D — but as evidenced by the notch in your iPhone, depth-sensing cameras are still pretty bulky. A new ap...
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...
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...
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...
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...
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...
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...
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...
Tele extender
A teleconverter (sometimes called tele extender) is a secondary lens which is mounted between the camera and a photographic lens. Its job is to enlarge the central part of an image obtained by the obj...
Spider eyes inspire a new kind of depth-sensing camera
As robots and gadgets continue to pervade our everyday lives, they increasingly need to see in 3D — but as evidenced by the notch in your iPhone, depth-sensing cameras are still pretty bulky. A new ap...
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...
S mount
S-mount may refer to:
Sigma 10mm F2.8 EX DC Fisheye HSM lens
The Sigma 10mm f/2.8 EX DC fisheye is a photographic lens manufactured by Sigma Corporation. It is a diagonal fisheye lens. Unlike most fisheye lenses, this lens is designed for digital SLR cameras t...
Canon EF 28mm lens
The EF 28mm lenses are a group of prime lenses made by Canon that share the same focal length.These lenses use the EF type mount that fits the Canon EOS line of cameras. When used on a camera body wit...
Canon EF 28-105mm lens
The Canon EF 28–105 mm f/4–5.6 is an inexpensive zoom lens often included as a kit lens with Canon 35 mm single-lens reflex cameras. 28–105 mm is a standard wide to telephoto zoom range...
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...
Kit lens
A kit lens is a "starter" lens which can be sold with an interchangeable-lens camera such as a single-lens reflex camera. It is generally an inexpensive lens priced at the lowest end of the manufactur...
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...
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...
Sigma SA mount
The Sigma SA-mount is a lens mount designed by the Sigma Corporation of Japan for use on their single-lens reflex cameras. The SA mount uses a bayonet mount which is physically similar to the Pentax ...
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...
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...
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...