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Wild Bird Photography This book is for everyone who wants to take better bird photographs. It shows you how to photograph unobtrusively in intimate contact with your subjects whether they are in your backyard, in the woods, on the water, or at the end of the street. Reading this National Audobon Society Guide is like being in the field looking over the shoulder of one of the finest bird photographers of our time who also happens to be an excellent& willing teacher, eager to share his secrets with you. Wild Bird Photography shows you how to select& evaluate special equipment for bird photography, how to capture the beauty of natural light, make picture design from the field to the digital studio,& photographing with exclusive subjects in the field. The result is a superbly useful book for anyone who enjoys bird photography who is thinking about starting this fascinating hobby. This book also includes an appendix which lists suppliers of specialized products& recommended reference books. The caption for each photograph includes detailed information on the camera, lens, film,& special conditions used to make the picture. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.
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Sigma 28-70mm f/2.8-4 UC High Speed AF Lens Sigma 28-70mm f2.8-4 high speed zoom is one of several new products to be introduced at Photokina 2002 by the Sigma Corporation of Japan. The Sigma 28-70mm f2.8-4 high speed zoom lens features a large aperture with lightweight contac lens supplier and compact dimensions. With a 28mm focal length, this lens has a fast f2.8 maximum aperture. The lightweight of 8.6 ounces contac lens supplier and the short length of 2.6 inches makes this lens very compact. The size contac lens supplier and weight of this standard lens make it very suitable for landscape photography contac lens supplier and snapshots. This lens has a minimum focus distance of 19.7/50cm at all focal lengths contac lens supplier and incorporates an aspherical lens element to minimize distortion. The lens materials used in this new lens are lead contac lens supplier and arsenic free ecological glass. Zoom in on Overstock.com contac lens supplier and save big on high performance camera equipment contac lens supplier and accessories.
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Thin lens - In optics, a thin lens is a lens with a thickness (distance along the optical axis between the two surfaces of the lens) that is negligible compared to the focal length of the lens. If the thickness of the lens is not neglected, it is called a thick lens.
Intraocular lens - An intraocular lens (or IOL) is an implanted lens in the eye, usually replacing the existing crystalline lens because it has been clouded over by a cataract. They usually consist of a plastic lens with plastic side struts called haptics to hold the lens in place within the capsular bag.
Focus free lens - A focus free lens is a photographic lens whose focal point is fixed at its hyperfocal distance. Rather than having a method of determining the correct focusing distance and setting the lens to that focal point, a focus free lens relies on depth of field to produce acceptably sharp images.
Wide-angle lens - In photography and cinematography, a wide-angle lens is a lens whose focal length is shorter than the focal length of a normal lens. For a 35 mm camera with a 36 mm by 24 mm format, the normal lens is 50 mm.
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