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Focal Plane Shutter
In camera design, a focal-plane shutter (FPS) is a type of photographic shutter that is positioned immediately in front of the focal plane of the camera, that is, right in front of the photographic film or image sensor. Two-curtain shutters The traditional type of focal-plane shutter in 35 mm cameras, pioneered by Leitz for use in its Leica cameras, uses two shutter curtains, made of opaque rubberised fabric, that run horizontally across the film plane. For slower shutter speeds, the first curtain opens (usually) from right to left, and after the required time with the shutter open, the second curtain closes the aperture in the same direction. When the shutter is cocked again the shutter curtains are moved back to their starting positions, ready to be released. Focal-plane shutter at low speed ''Figure 1:'' The black rectangle represents the frame aperture through which the exposure is made. It is currently covered by the first shutter curtain, shown in red. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focal-plane Shutter
In camera design, a focal-plane shutter (FPS) is a type of photographic shutter that is positioned immediately in front of the focal plane of the camera, that is, right in front of the photographic film or image sensor. Two-curtain shutters The traditional type of focal-plane shutter in 35 mm cameras, pioneered by Leitz for use in its Leica cameras, uses two shutter curtains, made of opaque rubberised fabric, that run horizontally across the film plane. For slower shutter speeds, the first curtain opens (usually) from right to left, and after the required time with the shutter open, the second curtain closes the aperture in the same direction. When the shutter is cocked again the shutter curtains are moved back to their starting positions, ready to be released. Focal-plane shutter at low speed ''Figure 1:'' The black rectangle represents the frame aperture through which the exposure is made. It is currently covered by the first shutter curtain, shown in red. The sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lightning Rolling Shutter
Lightning is a naturally occurring electrostatic discharge during which two electrically charged regions, both in the atmosphere or with one on the ground, temporarily neutralize themselves, causing the instantaneous release of an average of one gigajoule of energy. This discharge may produce a wide range of electromagnetic radiation, from heat created by the rapid movement of electrons, to brilliant flashes of visible light in the form of black-body radiation. Lightning causes thunder, a sound from the shock wave which develops as gases in the vicinity of the discharge experience a sudden increase in pressure. Lightning occurs commonly during thunderstorms as well as other types of energetic weather systems, but volcanic lightning can also occur during volcanic eruptions. The three main kinds of lightning are distinguished by where they occur: either inside a single thundercloud (intra-cloud), between two clouds (cloud-to-cloud), or between a cloud and the ground (cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Widelux
The Widelux is a fully mechanical swing-lens panoramic camera first developed in Japan in 1958, by Panon Camera Shoko. There are both 35mm and medium-format models. Instead of a shutter, the camera has a slit that exposes the film as the lens pivots on a horizontal arc. This pivot allows for some distortion effects not available with traditional cameras. The last Widelux model F8 ended production in 2000. Models Widelux F series 35mm * Widelux FI (1959) with Vistar f/2.8 26mm * Widelux FV (1959) with Panon f/2.8 26mm * Widelux FVI (~1964) * Widelux F6 (~1970) * Widelux F6B (~1970s) * Widelux F7 (1979–1988) * Widelux F8 (1988–2000) Medium Format model 1500 The medium format Widelux model 1500 make 50x122 mm frames on 120 film, and cover a 150-degree horizontal angle across the long side. It was described as newly introduced in 1988 and cost "about US$4,500" at the time. Differences There are important differences between the F and 1500 series cameras. The 35 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panoramic Camera
Panoramic photography is a technique of photography, using specialized equipment or software, that captures images with horizontally elongated fields of view. It is sometimes known as ''wide format photography''. The term has also been applied to a photograph that is cropped to a relatively wide aspect ratio, like the familiar letterbox format in wide-screen video. While there is no formal division between " wide-angle" and " panoramic" photography, "wide-angle" normally refers to a type of lens, but using this lens type does not necessarily make an image a panorama. An image made with an ultra wide-angle fisheye lens covering the normal film frame of 1:1.33 is not automatically considered to be a panorama. An image showing a field of view approximating, or greater than, that of the human eye – about 160° by 75° – may be termed panoramic. This generally means it has an aspect ratio of 2:1 or larger, the image being at least twice as wide as it is high. The resulting image ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Widelux F7 Panoramic Camera-front
The Widelux is a fully mechanical swing-lens panoramic camera first developed in Japan in 1958, by Panon Camera Shoko. There are both 35mm and medium-format models. Instead of a shutter, the camera has a slit that exposes the film as the lens pivots on a horizontal arc. This pivot allows for some distortion effects not available with traditional cameras. The last Widelux model F8 ended production in 2000. Models Widelux F series 35mm * Widelux FI (1959) with Vistar f/2.8 26mm * Widelux FV (1959) with Panon f/2.8 26mm * Widelux FVI (~1964) * Widelux F6 (~1970) * Widelux F6B (~1970s) * Widelux F7 (1979–1988) * Widelux F8 (1988–2000) Medium Format model 1500 The medium format Widelux model 1500 make 50x122 mm frames on 120 film, and cover a 150-degree horizontal angle across the long side. It was described as newly introduced in 1988 and cost "about US$4,500" at the time. Differences There are important differences between the F and 1500 series cameras. The 35m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Widelux F7 Panoramic Camera-back
The Widelux is a fully mechanical swing-lens panoramic camera first developed in Japan in 1958, by Panon Camera Shoko. There are both 35mm and medium-format models. Instead of a shutter, the camera has a slit that exposes the film as the lens pivots on a horizontal arc. This pivot allows for some distortion effects not available with traditional cameras. The last Widelux model F8 ended production in 2000. Models Widelux F series 35mm * Widelux FI (1959) with Vistar f/2.8 26mm * Widelux FV (1959) with Panon f/2.8 26mm * Widelux FVI (~1964) * Widelux F6 (~1970) * Widelux F6B (~1970s) * Widelux F7 (1979–1988) * Widelux F8 (1988–2000) Medium Format model 1500 The medium format Widelux model 1500 make 50x122 mm frames on 120 film, and cover a 150-degree horizontal angle across the long side. It was described as newly introduced in 1988 and cost "about US$4,500" at the time. Differences There are important differences between the F and 1500 series cameras. The 35mm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Univex Mercury
The 1938 Univex Mercury was an unusual half frame 35 mm camera from The Universal Camera Corporation. It was the first camera with any kind of hot shoe Canon EOS 350D Hot shoe Proprietary hot shoe used by Minolta and older Sony cameras (Konica Minolta Maxxum 7D">Sony.html" ;"title="Minolta and older Sony">Minolta and older Sony cameras (Konica Minolta Maxxum 7D) A hot shoe is a mounting poin ... connector, and had a distinctive profile due to a large dome protruding from the top of the main body to accommodate its 1/1000 sec rotary disc shutter.S. F. Spira with Eaton S. Lothrop, Jr and Jonathan R. Spira. ''The History of Photography as Seen Through the Spira Collection.'' New York, NY: Aperture, 2001 . pp 154, 159-160. References Cameras {{camera-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olympus Pen F
The Olympus Pen F, Pen FT and Pen FV are very similar half-frame 35 mm single-lens reflex (SLR) cameras with interchangeable lenses produced by Olympus of Japan between 1963-1966 (Pen F), 1966-1972 (Pen FT) and 1967-1970 (Pen FV). The original Pen F has a double-stroke film advance and a distinctive logo rendered in a gothic font. The later Pen FT added a single-stroke film advance, and an uncoupled, integrated light meter, which uses a system of exposure numbers rather than f-stops. The exposure numbers were added to the aperture rings of later Pen F lenses; the rings could be pulled out and rotated to show conventional f-stops instead. A side-effect of the FT's light meter was a dimmer viewfinder. The Pen FV was essentially a Pen FT with the light meter deleted and the F's brighter viewfinder reinstated. ''Half frame'' means that the camera uses an 18×24 mm vertical (portrait) format, producing twice the pictures on a roll of 135 film as the regular 36×24 mm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotary Disc Shutter
A rotary disc shutter is a type of shutter. It is notably used in motion picture cameras. Rotary shutters are semicircular discs that spin in front of the film gate, alternately allowing light from the lens to strike the film, or blocking it. Details Rotary shutters are semicircular discs that spin in front of the film gate, alternately allowing light from the lens to strike the film, or blocking it. When blocking the light, the exposed portion of the film is advanced, and another, pristine frame is moved into position. The spinning disc then exposes the new frame of film. The nature of light-sensitive film requires a shutter to block the light and prevent "smearing" of the image as the film is advanced through the camera. Digital sensors do not require a rotary shutter, although some high-end digital cinema cameras do have them. Some rotary shutters utilize mirrors (or mirrored surfaces) so that when the shutter is in its "closed" position, light from the lens is redirected to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pockels Cell
The Pockels effect or Pockels electro-optic effect, named after Friedrich Carl Alwin Pockels (who studied the effect in 1893), changes or produces birefringence in an optical medium induced by an electric field. In the Pockels effect, also known as the linear electro-optic effect, the birefringence is proportional to the electric field. In the Kerr effect, the refractive index change (birefringence) is proportional to the square of the field. The Pockels effect occurs only in crystals that lack inversion symmetry, such as KH2PO4 (KDP), KD2PO4 (KD*P or DKDP), lithium niobate (LiNbO3), and in other non-centrosymmetric media such as electric-field poled polymers or glasses. The electro-optic properties of materials like KDP and its isomorphs that exhibits that Pockels effect has been extensively studied over the years to allow accurate models for simulations. Pockels cells Pockels cells are voltage-controlled wave plates. The Pockels effect is the basis of the operation of Pock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolling Shutter
Rolling shutter is a method of image capture in which a still picture (in a still camera) or each frame of a video (in a video camera) is captured not by taking a snapshot of the entire scene at a single instant in time but rather by scanning across the scene rapidly, vertically, horizontally or rotationally. In other words, not all parts of the image of the scene are recorded at exactly the same instant. (Though, during playback, the entire image of the scene is displayed at once, as if it represents a single instant in time.) This produces predictable distortions of fast-moving objects or rapid flashes of light. This is in contrast with "global shutter" in which the entire frame is captured at the same instant. The rolling shutter can be either mechanical or electronic. The advantage of this electronic rolling shutter is that the image sensor can continue to gather photons during the acquisition process, thus effectively increasing sensitivity. It is found on many digital s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breaking The X-sync Barrier
Breaking or breakin' may refer to: Arts * Breakdancing (also breaking), an athletic style of street dance * ''Breakin''', a 1984 American breakdancing-themed musical film * "Breakin, a twelfth-season episode of the American animated television series ''SpongeBob SquarePants'' * ''Breaking'' (film), a 2022 American thriller drama film * Sequence breaking, performing actions or obtaining items in video games out of the intended linear order Music * "Breakin (song), a single from The Music's second album, ''Welcome to the North'' * " Breakin'... There's No Stopping Us", a song by American music duo Ollie & Jerry * "Breakin, the sixth song on The All-American Rejects' 2008 album ''When the World Comes Down'' * ''Breaking'' (album), the eighth full-length album by American musician Brian Larsen * "Breaking" (song), a song by American alternative rock band, Anberlin Damage * Breaking (martial arts), technique that is used in competition, demonstration and testing * Fracture, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
