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 Ideal Lens for Avian Photography

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Number of posts : 6
Registration date : 2008-08-10

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PostSubject: Ideal Lens for Avian Photography   Ideal Lens for Avian Photography Icon_minitimeTue Aug 12, 2008 5:16 am

Ideal Lens for Avian Photography Ef800_f56lisu_586x225
EF 800mm f/5.6L IS USM

This is the longest telephoto lens among Canon's lineup, and a terrific choice for any long-distance application-outdoor sports, wildlife, news photojournalism, and so on. It's actually lighter than Canon's EF 600mm f/4L IS lens, weighing just under 10 lbs. It uses a refined optical design, with two fluorite lens elements, one UD element, and one Super-UD-glass element, for outstanding correction of color fringing and superb contrast and sharpness. This super-telephoto lens uses magnesium-alloy barrel construction to enhance its light weight, and has weather-resistant gaskets throughout for use in harsh conditions. It's compatible with both the EF 1.4x II and 2x II tele extenders for even more reach: EOS cameras with 45 AF points will continue to provide autofocus at the center AF point when the lens is used with the 1.4x extender. Finally, it's image stabilized, providing up to 4 stops of correction for camera shake. This makes it even more practical in many situations.
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Number of posts : 14
Age : 34
Registration date : 2008-08-11

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PostSubject: Re: Ideal Lens for Avian Photography   Ideal Lens for Avian Photography Icon_minitimeSun Aug 17, 2008 5:05 am

Ideal Lens for Avian Photography 300-8010Ideal Lens for Avian Photography Equipment-f23

APO 300-800 F5.6 EX DG HSM

From 300mm telephoto to 800mm ultra-telephoto this new lens provides a constant fast maximum aperture and is optimized for digital SLR cameras.

This lens covers the telephoto range from 300mm to the ultra-telephoto range up to 800mm. By continuously varying the angle of view from 8.2° to 3.1°, the lens takes a lot of the footwork out of picture composition.
New coating reduces Ghost and Flare

The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance.
It is equipped with ELD (Extra Low Dispersion) glass elements

Two ELD glass elements in the front lens elements reduce chromatic aberration to a minimum and also ensure sharp, quality images of high contrast.
HSM (Hyper Sonic Motor for Sigma, Canon and Nikon mount lenses)

The HSM models provide silent, high-speed and precise auto-focusing with full time manual focus override.
It also features a drop-in filter

It also features a drop-in 46mm filter holder in the rear part of the lens barrel, which can be rotated to facilitate the use of filters, including a polarizing filter.
Internal Focusing and Internal Zooming

Since focusing and zooming do not change its overall length, this lens is easy to hold and use. In addition, since the front of the lens does not rotate, a circular polarizing filter can be easily attached and use.
Accepts both 1.4X and 2X APO EX Tele-Converters

When this lens is used with the 1.4x EX or 2x EX Apo Tele Converters (optional), it becomes a 420-1120mmF8 MF lens or a 600-1600mm F11 MF lens respectively.
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