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Canon say the newly designed optical system of the EF 70-200mm f/2.8L IS USM is based on that of its predecessor, the EF 70-200mm f/2.8L USM, with the addition of a built-in image stabiliser (IS) system. This allows the EOS user to achieve stabiliser effects equivalent to approximately three stops in terms of shutter speed, whereas previous Canon IS lenses provided an equivalent to approximately two stops.
With image stabiliser performance surpassing previous IS lenses, plus high-resolution, high-contrast optical capability, and dust and moisture resistance, Canon claim this lens stands ahead of previous models and competing models in its class.
The inner focus design, combined with a ring type USM (Ultra Sonic Motor) for silent high-speed auto focusing, results in a performance surpassing that of the EF 70-200mm f/2.8L USM. Full manual focus is possible so that you can focus while still in autofocus mode using the full-time mechanical manual focusing function. The lens is also equipped with a wide focusing ring and zoom ring for easier operation.
Cano go on to say that dispersion lenses provide excellent compensation for residual chromatic aberration, resulting in high image quality over the full zooming range. The lens can also be used with Canon's extenders EF 1.4X II and EF 2X II, without losing autofocusing and IS features on a selected number of high-end SLR cameras, such as the EOS 1V.
This new addition to the line-up further expands Canon's wide range of more than 60 Canon EF lenses.
For further information visit www.canon.co.uk or telephone 0800 616417 for a brochure. Please mention ePHOTOzine.
AF actuator: Ring USM
Closest focusing distance: 1.4m
Diagonal angle-of-view: 34 - 12
Horizontal angle-of-view: 29 - 10
Maximum magnification: 0.17 (at 200mm)
Minimum aperture: f/32
Lens construction: 23 elements /18 groups
Number of diaphragm blades: 8
Filter diameter: 77mm
Lens hood: ET-86
Lens cap: E-77U
Soft case: LZ1324
Max diameter x length: 86.2 x 197mm
Standard accessory: Ring-type tripod mount B