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A wide-angle process lens with 4 elements in 4 groups, optimized for reproduction ratios between 2:1 and 1:2. The 270 mm lens has an angle of coverage of 72°, the 240 mm has 80°, and the 210 mm has 86°, which give these lenses gigantic image circles, though the image softens considerably near the edges of coverage. 210mm f/11 (for 20×24 in)
The advent of the Biogon opened the way to more extreme wide-angle lenses. Bertele continued to develop his design, patenting an asymmetric wide-angle lens in 1952 that covered an astonishing 120° angle of view "and beyond, practically distortion free", by adding a strong negative meniscus front element to the Biogon design, showing influences from earlier fisheye lens designs, including the ...
Laowa 9 mm f/2.8 super wide angle lens for APS-C, introduced in 2015 Laowa 25 mm 2.5-5x ultra macro lens for full frame, introduced in 2018. The first lens was the 60 mm f/2.8 2 x Ultra Macro, a full frame lens with a magnification factor of 2:1 that could also be focused to infinity which is unique. [8]
Ferrania (Italy) Major producer of B&W film, cine film, color negative and reversal white label films and own Solaris brand. Closed 2012, Formerly owned by 3M and spun out into Imation. Sold x-ray business to Kodak. See FILM Ferrania. Forte (Hungary) Manufacture of B&W film. Closed 2007; Fuda (China) Manufacture of B&W and Color film. Closed
This means the crop factor for most film-based Hasselblad cameras (based on diagonal angle of view) compared to "full-frame" 135 is 0.54; for example, a V system lens with a focal length of 80 mm would have the equivalent coverage of a lens with a focal length of approximately 45 mm on a 135 film camera.
Cross-section of a typical retrofocus wide-angle lens. Extreme or ultra-wide-angle lens - a wide-angle lens with an angle of view above 90 degrees. [4] Extreme-wide-angle lenses share the same issues as ordinary wide-angle lenses but the focal length of such lenses may be so short that there is insufficient physical space in front of the film ...
The company was founded in 1972 and has about 150 employees. Samyang exports to 58 countries through 39 overseas agents and distributors. In July 2023, Samyang joined the L-Mount Alliance. [1] Samyang products are also sold under a wide variety of different brand names. Some examples are Rokinon, Bower, Opteka, Vivitar, Phoenix and Quantaray.
A panomorph lens is a particular type of wide-angle lens specifically designed to improve optical performances in predefined zones of interest, or across the whole image, compared to traditional fisheye lenses. [1] [predatory publisher] Some examples of improved optical parameters include the number of pixels, the MTF or the relative illumination.