Chapters: Canon L Lens, Canon Ef 70-200mm Lens, Canon Ef 135mm Lens, Canon Ef 200mm Lens, Canon Ef 1200mm Lens, Canon Ef 28-80mm Lens, Canon Ef 24-70mm Lens, Canon Ef 17-40mm Lens, Canon Ef 24-105mm Lens, Canon Ef 28-70mm Lens, Canon Ef 100-400mm Lens. Source: Wikipedia. Pages: 48. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: An L lens is a line of SLR photography lenses made by Canon. L lenses are Canon's top-of-the-line lenses. The "L" officially stands for "Luxury", a reference to the lenses' high price and build quality. The use of "ASPH" was common to notate aspherical elements throughout Canon's and other manufacturers' histories. Canon produces both L-series zoom and prime lenses for their obsolete FD lens mount and for their current EF lens mount used on all Canon EOS cameras (digital and film). The lens on the Canon PowerShot Pro1 was designated L-series, and was the first fixed (non-interchangeable) lens so designated. L-lenses have superior optical performance and are typically built with a solid construction to withstand constant use and harsh conditions. They can be recognized by a red ring around the front part of the lens. Most recent L lenses have sealing to help resist dust and water. L-lenses are typically used by professionals and serious amateurs due to their high price and large mass. Most L series lenses share a number of common characteristics: There are some lenses which include one or more of these technologies but which are not designated L-lenses. L-lenses are often equipped with USM and/or IS, but the optical performance is the key criterion. Larger sized L-lenses, such as the 70-200 mm and 100-400 mm zooms and longer focal length primes (300 mm+), usually have an off-white barrel (sometimes referred to as the color "putty") to reduce heat absorption under t...More: http://booksllc.net/?id=5900855Price: $19.99
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