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Canon EF-S 17mm - 85mm f/4.0-5.6 USM IS Image
Stabilized Autofocus Zoom Lens
By reducing the distance
from the rear of the lens to
the focal plane and reducing
the size of the image circle
to match the size of the
APS-C imaging sensor used in
digital SLRs such as the EOS
20D camera and Digital Rebel
camera, Canon's EF-S lenses
reduce the size, weight and
cost of wide-angle lenses
for these cameras while at
the same time producing high
image quality with superb
resolution and contrast at
all focal lengths.
EF-S 17-85 F4 IS USM
This new EF-S lens brings
true wide-angle to telephoto
coverage to EOS 20D camera
and Digital Rebel camera
photographers. It features
Canon's Image Stabilization
system, allowing safe
hand-held photography at
shutter speeds up to three
steps slower than otherwise
possible. And of course,
it's optically optimized for
digital SLRs. A ring-type
USM delivers fast and silent
auto focus, as well as
full-time manual focus when
in the AF mode.
The EF-S 17-85mm f/4-5.6 IS
USM lens provides a 5x zoom
ratio and an angle of view
equivalent to a 27-136mm
lens on a 35mm camera. The
new lens also uses a
glass-molded aspherical lens
element with aspherical
surfaces on both sides for
superb image quality
throughout the entire zoom
range and it features a
closest focusing distance of
12 inches at all focal
lengths. The EF-S 17-85mm IS
lens is 5% shorter and 12%
lighter than the EF 28-135mm
IS lens and accepts 67mm
filters. |
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EF-S lens mount, exclusively
for EOS 20D and Digital
Rebel bodies |
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Excellent optical quality:
Aspheric element with two
Aspherical surfaces utilized |
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Close-focusing to 1.15 feet
-- at 135mm, fills the frame
with subject 3 x 4.4 inches |
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Ring-type Ultrasonic motor
for superior AF performance;
allows full-time MF |
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Image Stabilization extends
the lens's usefulness in
low-light levels |
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Circular aperture design --
natural highlights, even
stopped down two stops |
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Non-rotating front element;
lens length does not change
during zooming |
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Compact, lightweight design
with a 5x zoom ratio, 28 to
135mm equivalent |
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Construction |
17 elements in 12 groups |
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Angle of view |
Diagonal Angle of View: 78°
30' - 18° 25' |
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Closest Focusing Distance |
0.35m - 1.15 ft. |
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Filter Size |
67mm |
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Dimensions (Length x
Diameter) |
3.1" x 3.6" / 78.5 x 92mm |
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Weight |
16.8 oz. / 475g |
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Notes |
Focus Adjustment: Inner
focusing system, with
focusing cam Zoom System:
Ring USM |
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