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Showing posts from November, 2014

EF 100-400mm f4.5-5.6L IS II USM

Canon has introduced the EF 100-400mm f/4.5-5.6L IS II USM, a new powerful, high-performance zoom lens, ideal for  sports and wildlife photographers. A successor to the  popular EF 100-400mm f4.5-5.6L IS USM, the new model features a range of upgrades to improve image quality and enhance usability. The redesigned optical structure of the lens features an improved 4-stop optical image stabilizer to reduce the effects of camera shake with long-distance shots. There are three IS modes tailored to suit typical shooting conditions, while Canon’s ring-type ultrasonic motor USM) provides fast, silent autofocusing. The 21-element design includes a combination of fluorite and super ultra-low dispersion (Super UD) lens elements and, in a first for the EF lens range, Canon’s new Air Sphere Coating (ASC). The new advanced anti-reflection coating is constructed of tiny nano particles of trapped air, which create an ultra-low refractive index layer to help reduce visible ghosting and flare.