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  2. Rodenstock Photo Optics - Wikipedia

    en.wikipedia.org/wiki/Rodenstock_Photo_Optics

    Photographic lenses were sold initially with the G. Rodenstock brand. A 1912 catalog lists Eurynar double-anastigmat lenses with focal lengths ranging from 3 + 1 ⁄ 2 in (89 mm) to 19 in (480 mm) for various formats with maximum apertures of f /6.8; similar Eurynar lenses were offered with maximum apertures of f /5.4 and f /4.5.

  3. Rodenstock GmbH - Wikipedia

    en.wikipedia.org/wiki/Rodenstock_GmbH

    The Rodenstock Präzisionsoptik precision optics division, which includes the production of lenses for analog view cameras, enlargers, and digital view cameras with high-resolution digital camera backs (e.g. the 1997 Apo-Sironar digital) was spun off in 1996 as Rodenstock Photo Optics, a new company and in 2000, it was acquired by Göttingen ...

  4. Camera lens - Wikipedia

    en.wikipedia.org/wiki/Camera_lens

    Different kinds of camera lenses, including wide angle, telephoto and speciality. A camera lens (also known as photographic lens or photographic objective) is an optical lens or assembly of lenses (compound lens) used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.

  5. Signal-to-noise ratio (imaging) - Wikipedia

    en.wikipedia.org/wiki/Signal-to-noise_ratio...

    SNR is sometimes quantified in decibels (dB) of signal power relative to noise power, though in the imaging field the concept of "power" is sometimes taken to be the power of a voltage signal proportional to optical power; so a 20 dB SNR may mean either 10:1 or 100:1 optical power, depending on which definition is in use.

  6. Vignetting - Wikipedia

    en.wikipedia.org/wiki/Vignetting

    In photography and optics, vignetting (/ v ɪ n ˈ j ɛ t ɪ ŋ / vin-YET-ing) is a reduction of an image's brightness or saturation toward the periphery compared to the image center. The word vignette , from the same root as vine , originally referred to a decorative border in a book.

  7. Coherent's AI Optical Transceiver And CEOs Turnaround ... - AOL

    www.aol.com/finance/coherents-ai-optical...

    Coherent Corp (NYSE:COHR) stock is trading higher Monday after BofA Securities analyst Vivek Arya upgraded the stock rating from Neutral to Buy with a price target of $75, up from $65. Arya ...