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  2. Canon EF 28-90mm lens - Wikipedia

    en.wikipedia.org/wiki/Canon_EF_28-90mm_lens

    The Canon EF 28–90mm f / 45.6 is a full frame SLR zoom lens, also often included as a kit lens with Canon EOS film cameras. The maximum aperture is f / 4 at 28mm, reducing to f / 5.6 at 90mm. When set to 90mm, this will create a moderate amount of background blur for portrait photography.

  3. First Alert - Wikipedia

    en.wikipedia.org/wiki/First_Alert

    First Alert is the retail brand of American safety equipment manufacturer BRK Brands, Inc., [1] established in 1976 and based in Aurora, Illinois, with a production plant in Juarez, Mexico. Products sold with the brand include carbon monoxide detectors, smoke alarms , fire extinguishers , and other safety products like flashlights and fire ...

  4. Lens adapter - Wikipedia

    en.wikipedia.org/wiki/Lens_Adapter

    This lens adapter is a passive adapter designed for mounting a Nikon F-mount lens to a Micro Four Thirds camera. Active lens adapter: Canon EF to Sony E. In photography and videography, a lens adapter is a device that enables the use of camera and lens combinations from otherwise incompatible systems. The most simple lens adapter designs ...

  5. Flange focal distance - Wikipedia

    en.wikipedia.org/wiki/Flange_focal_distance

    Diagram illustrating the flange focal length of an SLR–type and a mirrorless–type camera. For an interchangeable lens camera, the flange focal distance (FFD) (also known as the flange-to-film distance, flange focal depth, flange back distance (FBD), flange focal length (FFL), back focus [1] or register, depending on the usage and source) of a lens mount system is the distance from the ...

  6. Canon EF 17-40mm lens - Wikipedia

    en.wikipedia.org/wiki/Canon_EF_17-40mm_lens

    The EF 17–40mm f / 4L USM lens is a wide-angle lens made by Canon Inc. The lens has an EF mount to work with the EOS line of cameras. Other than the front element, it is sealed against dust and water, and features a diaphragm which remains nearly circular from f / 4 to f / 8. It is one of the few Canon photo lenses that are parfocal. [1]

  7. Kidde - Wikipedia

    en.wikipedia.org/wiki/Kidde

    Kidde (/ ˈ k ɪ d ə / [2]) is an American multinational company that manufactures and distributes fire detection and suppression equipment, as well as smoke and CO alarm units. Kidde is one of America's largest manufacturers of smoke alarms [3] [4] and fire safety products. [5]

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