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Understanding camera lenses can help add more creative control to digital photography. Choosing the right lens for the task can become a complex trade-off between cost, size, weight, lens speed and image quality. This tutorial aims to improve understanding by providing an introductory overview of concepts relating to image quality, focal length, perspective, prime vs. zoom lenses and aperture or f-number. All but the simplest cameras contain lenses which are actually comprised of several "lens elements. " Each of these elements directs the path of light rays to recreate the image as accurately as possible on the digital sensor. Optical aberrations occur when points in the image do not translate back onto single points after passing through the lens — causing image blurring, reduced contrast or misalignment of colors (chromatic aberration).
Original Image Any of the above problems is present to some degree with any lens. *Note: Lens focal lengths are for 35 mm equivalent cameras. Forums. Digital Cameras: Digital Photography Review, News, Reviews, Forums, FAQ. How to Take Better Pictures © 1973 ~ 2017 Ken Rockwell and KenRockwell.com. All rights reserved. Cameras & Lens Reviews Recommended Cameras Newest Articles Recommended Books Tutorial Videos Newest Articles This free website's biggest source of support is when you use any of these links when you get anything, regardless of the country in which you live.
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