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Cambo lens board with Copal #1. A lens board or lensboard is a photographic part used for securing a lens to the front standard of a large format view camera. [1] The lens board itself is usually flat, square, and made of metal (most commonly aluminum), wood, or plastic. The lens board will have a hole of various diameters drilled dead center ...
The most common large format is 4×5 inches (10.2x12.7 cm), which was the size used by cameras like the Graflex Speed Graphic and Crown Graphic, among others. Less common formats include quarter-plate (3.25x4.25 inches (8.3x10.8 cm)), 5×7 inches (12.7x17.8 cm), and 8×10 inches (20×25 cm); the size of many old 1920s Kodak cameras (various versions of Kodak 1, 2, and 3 and Master View cameras ...
Large format lenses are photographic optics that provide an image circle large enough to cover the large format film or plates used in large format cameras.. Photographic optics generally project a circular image behind that is only required to have acceptable correction of aberrations over the intended film/sensor diagonal with little room to spare.
The Fine-Art XXL line is designed for ultra-large format shooting, covering 20×24 inches. Both lenses are large and heavy, but are designed with exceptional image quality and a huge 900 mm circle of coverage in mind. The 550 mm lens is a 6/2 construction, giving 78° of coverage, while the 1100 mm lens is 4/4 with 45.7° of coverage.
35 mm equivalent focal lengths are calculated by multiplying the actual focal length of the lens by the crop factor of the sensor. Typical crop factors are 1.26× – 1.29× for Canon (1.35× for Sigma "H") APS-H format, 1.5× for Nikon APS-C ("DX") format (also used by Sony, Pentax, Fuji, Samsung and others), 1.6× for Canon APS-C format, 2× for Micro Four Thirds format, 2.7× for 1-inch ...
Basic view camera terminology. A view camera is a large-format camera in which the lens forms an inverted image on a ground-glass screen directly at the film plane.The image is viewed, composed, and focused, then the glass screen is replaced with the film to expose exactly the same image seen on the screen.
The Speed Graphic was available in 2¼ × 3¼ inch, 3¼ × 4¼ inch, 5 × 7 inch and the most common format 4 × 5 inch. Because of the focal plane shutter, the Speed Graphic can also use lenses that do not have shutters (known as barrel lenses). [4] Using a Speed Graphic, especially with the rear shutter system, was a slow process.
Later in 1928, [1] the lens became the Tiefenbildner-Imagon, which was introduced by Rodenstock in 1930/1931 and produced up into the 1990s. The unusual term Tiefenbildner is a German composition, which can be best translated as " depth-of-field creator, modulator or painter" in an artistic sense; this designation was later dropped.
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