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
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
Closest focusing distance: 1.4m
angle-of-view: 34 - 12
29 - 10
Maximum magnification: 0.17 (at
Minimum aperture: f/32
23 elements /18 groups
Number of diaphragm
Lens hood: ET-86
Max diameter x length: 86.2 x
Ring-type tripod mount B