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Abbe number. In optics and lens design, the Abbe number, also known as the V-number or constringence of a transparent material, is an approximate measure of the material's dispersion (change of refractive index versus wavelength), with high values of V indicating low dispersion. It is named after Ernst Abbe (1840–1905), the German physicist ...
Low-dispersion glass ( LD glass) is a type of glass with reduced chromatic aberration, meaning the refractive index does not change as strongly with different wavelengths of light. In other words, the light passing through the glass has a smaller spread or dispersion between its constituent colors, resulting in a reduced " rainbow effect" at ...
The following 11 pages are in this category, out of 11 total. This list may not reflect recent changes . Canon EF-S lens mount. 0–9. Canon EF-S 10–18mm lens. Canon EF-S 10–22mm lens. Canon EF-S 15–85mm lens. Canon EF-S 17–55mm lens. Canon EF-S 17–85mm lens.
Canon EF 70-300mm lens. Canon EF 80-200mm lens. Canon EF 85mm lens. Canon EF 100mm lens. Canon EF 100–200mm lens. Canon EF 100-300mm lens. Canon EF 180mm f/3.5L Macro USM lens. Canon EF 200-400mm lens.
In optics, the Abbe sine condition is a condition that must be fulfilled by a lens or other optical system in order for it to produce sharp images of off-axis as well as on-axis objects. It was formulated by Ernst Abbe in the context of microscopes. [ 1] The Abbe sine condition says that. the sine of the object-space angle should be ...
Made in. Japan. Canon EOS M is the first mirrorless interchangeable-lens camera produced by Canon . DPReview noted that the EOS M is effectively a miniature version of the Canon EOS 650D, which was introduced in June 2012, with a simpler physical interface. [ 1] The letter M in EOS M stands for "mobility" and EOS means "electro-optical system".
See Canon EF lenses for the product line-up. See Canon EF-S lenses for the product line-up. EF-S lenses are built for APS-C 1.6x crop sensors, so they only work with models that use this sensor size. When EF-S lenses are used on a 35mm (full frame) camera the back element will hit the mirror assembly or cause substantial vignetting since the ...
Logo. Canon EOS ( Electro-Optical System) is an autofocus single-lens reflex camera (SLR) and mirrorless camera series produced by Canon Inc. Introduced in 1987 with the Canon EOS 650, all EOS cameras used 35 mm film until October 1996 when the EOS IX was released using the new and short-lived APS film. In 2000, the D30 was announced, as the ...
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