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Tilt-lens photo of a model train. Note how the focus plane is along the train, and how the blurring of the background proceeds from left to right. Tilt–shift photography is the use of camera movements that change the orientation or position of the lens with respect to the film or image sensor on cameras.
A single-lens reflex camera (SLR) is a camera that typically uses a mirror and prism system (hence "reflex" from the mirror's reflection) that permits the photographer to view through the lens and see exactly what will be captured.
Various types of catadioptric systems are also used in camera lenses known alternatively as catadioptric lenses (CATs), reflex lenses, or mirror lenses. These lenses use some form of the cassegrain design which greatly reduces the physical length of the optical assembly, partly by folding the optical path, but mostly through the telephoto ...
Twin-lens reflex (TLR) cameras use a viewfinding lens with the same focal length as the camera lens, so it has the same field of view and focus properties. With a mirror, of similar size to the film, held at 45°, it projects an upright image onto a focusing ground glass screen viewable from above. The camera can be then be held steady at waist ...
Light travels through a single lens and a mirror is used to reflect a portion of that light through the viewfinder – hence the name "single-lens reflex". While there are variations among point-and-shoot cameras , the typical design exposes the sensor constantly to the light projected by the lens, allowing the camera's screen to be used as an ...
The image in a TLR viewfinder is laterally reversed, i.e. it is a mirror image. Most photographers use a cardboard tube or other apparatus connecting the two cameras in order to eliminate stray light and prevent reflections from appearing on the viewfinder glass or on the lens of the imaging camera.
The smallest photography TLR camera using 35 mm film is the Swiss-made Tessina, using perforated 35 mm film reloaded into special Tessina cassette, forming images of 14 mm × 21 mm. Goerz Minicord twin lens reflex made 10 mm × 10 mm format on double perforated 16 mm film in metal cassette. 6 Element Goerz Helgor F2 lens, metal focal plane ...
In photography, the single-lens reflex camera (SLR) is provided with a mirror to redirect light from the lens to the viewfinder prior to releasing the shutter for composing and focusing an image. When the shutter is released, the mirror swings up and away, allowing the exposure of the photographic medium , and instantly returns after the ...
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