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Photography Section
Nature Photography
Photography is an art that requires passion, an eye for a detail, a camera, and a subject. Nature Photography is not about taking a picture of a leaf or a waterfall but it is about how detailed the picture is, how beautiful it looks, and what impressions it produces for the observer. It is […]
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Autofocus assist beam
An Autofocus assist beam or AF assist beam is a lamp (usually red) which is incorporated into photographic cameras and flash units. This beam usually projects a regular pattern on to the subject which is recognized by the camera’s AF system and used for better autofocusing in low light situations.
Some cameras, like for example […]
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Kit lens
A kit lens is a “starter” lens sold bundled with an interchangeable-lens camera such as an SLR. It is generally a cheap lens priced at the lowest end of the manufacturer’s range, so as to not add much to a camera’s price. Originally, kit lenses were generally of normal focal length; more recently, kit […]
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Photoengraving
Photoengraving also known as photo-chemical milling is a process of engraving using photographic techniques. The most common type of photoengraving involves using a material that is photosensitive and resistant to acids or other etching compounds. This material, called a photoresist, is applied to a metal to be engraved. It is then exposed to light […]
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Zorki
Zorki is the name of a series of 35mm rangefinder cameras manufactured in the Soviet Union between 1948 and 1978.
The Zorki was a product of the Krasnogorsk Mechanical Factory (KMZ), which also produced the Zenit SLR. The first Zorki cameras were inexpensive Leica II copies just like the FED, but later models were considerably […]
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Zoom lens
A zoom lens is a mechanical assembly of lens elements with the ability to vary its focal length, as opposed to a prime lens which has a fixed focal length. They are commonly used with still, video, and motion picture cameras, some binoculars, microscopes and telescopes, and other optical instruments.
Applications
Zoom lenses are often described […]
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Zoom lens
A zoom lens is a mechanical assembly of lens elements with the ability to vary its focal length, as opposed to a prime lens which has a fixed focal length. They are commonly used with still, video, and motion picture cameras, some binoculars, microscopes and telescopes, and other optical instruments.
Applications
Zoom lenses are often described […]
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Zone system
The zone system is a unique approach to film exposure and development invented by Ansel Adams and Fred Archer in 1939 or 1940. The zone system provides photographers with a systematic method of precisely defining the relationship between the way they see the photographic subject and the results they achieve in their finished works. […]
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Zone plate
A Zone plate is a device used to focus light. Unlike lenses however, zone plates use diffraction instead of refraction. Created by Augustin-Jean Fresnel, they are sometimes called Fresnel zone plates in his honor. The zone plate’s focusing ability is an extension of the Arago spot phenomenon caused by diffraction from an opaque disc.
A […]
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Zeiss Tessar
The Zeiss Tessar is a famous photographic lens design conceived by Paul Rudolph (physicist) in 1902.
The Tessar was not evolved from the 1893 Cooke triplet design, as commonly believed, by replacing the rear element with a cemented achromatic doublet . In fact, in 1890 Paul Rudolph designed the Zeiss Anastigmat with two cemented doublets. […]
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