Lens (optics) - Wikipedia, the free encyclopedia of the visible and infrared light incident on the lens is concentrated into the small image. A large lens will create enough intensity to burn a flammable object at the focal point. Since ignition can be achieved even ...
New York Times Photojournalism - Photography, Video and Visual Journalism Archives - Lens Blog Lens is the photojournalism blog of The New York Times, presenting the finest and most interesting visual and multimedia reporting — photographs, videos and slide shows. A showcase for Times photographers and the pictures of the day, the Times photo blog
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Optical lens design - Wikipedia, the free encyclopedia Optical lens design is the process of designing a lens to meet a set of performance requirements and constraints, including cost and manufacturing limitations. Parameters include surface profile types (spherical, aspheric, holographic, diffractive, etc.),
AF-S Zoom-Nikkor ED 16-85mm f/3.5-5.6G IF DX VR A complete review of the AF-S 16-85mm Nikkor f/3.5-5.6G ED VR DX lens by noted Nikon expert Thom Hogan. ... The Basics Announced in January 2008 and delivered not long after, the 16-85mm DX was a slight surprise, and it departed from Nikon's parade of 18
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Amazon.com : Olympus M.Zuiko 17mm f/2.8 Lens : Camera Lenses : Camera & Photo This wide-angle pancake lens has a convenient focal length (equivalent to 34mm on a 35mm camera) for shooting everything from landscapes and portraits to close ups. A slim design, with an overall length of just 22.5mm, ensures the camera remains compact a
Amazon.com : Sigma 200-500mm f/2.8 APO EX DG Ultra-Telephoto Zoom Lens for Canon DSLR Cameras : Came This ultra telephoto zoom lens offers a fast aperture of F2.8 at the 500mm focal length and F5.6 at the 1000mm. It covers widely-used focal lengths from 200mm to 500mm and has a large aperture of F2.8 throughout the entire zoom range. This lens can be use
Pentax SMC DA 50mm f/1.8 Lens Review - Digital camera reviews, photography techniques, photography g Value For Money With a price tag of around £250, the performance of the optics are certainly worth paying a little extra for, although some aspects of the lens' design bring how good value this lens is into question. For example the plastic lens mount is
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