Professional Brochure

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effects of Optical Image Stabilizer, especially during macro
shooting. The incorporation of Hybrid IS allows users to
more effectively compensate for camera shake during close-up
shooting, marking a significant improvement in macro
photography for portrait, nature or wedding shoots.
Optical Image Stabilizer Mode 2 and Mode 3
The standard settings of the Optical Image Stabilizer are
set so that it is most effective when photographing stationary
subjects. However when panning with a moving subject is
attempted (tracking of the subject horizontally or vertically),
the shake-correction of the OIS may inadvertently over-
compensate and interfere with framing. To help resolve
this, Canon developed Optical Image Stabilizer Mode 2. In
this mode, if you move the lens to follow a subject for a
pre-determined time, the Optical Image Stabilizer does not
correct for the intentional panning while continuing to correct
any camera shake that’s perpendicular to the panning
motion. The result is a virtually smooth viewfinder image
as you follow the moving subject. Optical Image Stabilizer
Mode 3 activates IS only when the shutter button is fully
pressed, allowing for easy panning of fast-moving subjects.
Additionally, Mode 3 gives the equivalent effect of a
shutter speed four stops faster, further positioning a user
for action photography.
Subwavelength and Fluorine Anti-smear Coatings
The Subwavelength Coating (SWC) is a new proprietary lens
coating that helps control ghost and flare to a far greater
degree than with earlier coating technologies. Utilizing SWC
technology on large-curvature lens elements that are mainly
found in wide-angle lenses, will significantly minimize the
occurrence of ghosting and flare caused by reflected light
in environments that have posed problems. SWC is used
on the latest Canon wide-angle lens, EF 24mm f/1.4L II USM.
The Fluorine anti-smear coating keeps soiling, smears and
fingerprints to a minimum for easy cleaning.
L-Series Lenses
Highly regarded among professional photographers, Canon
L-Series lenses are distinguished by a bold red ring around
the outer barrel. What makes them truly distinctive, however,
Great Images Start with Great Lenses
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Hybrid Image Stabilizer
During normal shooting situations,
sudden camera movement in rota-
tional camera angles can cause significant image blur.
During macro or close-up photography however, the image
blur caused by linear camera shake — when the camera
moves parallel to the subject — is more pronounced.
Optical Image Stabilizer (OIS) is optimized to counteract
rotational or angular camera shake and works well for
most camera shooting situations. To help compensate for
linear camera shake, a new acceleration sensor was
required, the Hybrid Image Stabilizer.
Canon Hybrid Image Stabilizer technology, found in the
EF 100mm f/2.8L Macro IS USM, employs a highly sophisti-
cated algorithm combin-
ing the feedback of both
the acceleration sensor
and angular velocity
sensor found in current
OIS technology. This
combination moves the
image stabilizer lens
elements, effectively compensating for both rotational and
linear camera shake. Hybrid IS dramatically enhances the
For many professional photographers, Canon EF Series lenses
alone are reason enough to choose the EOS System. A venerable
blend of world-class optics, microelectronics, and precision
manufacturing technologies such as a new SWC (Subwavelength
Structure Coating) lens coating for better light transmission
and reduced flare, EF lenses are perfected in Canon’s laboratories
and proven in the field. Whatever, whenever and wherever you
shoot, you can count on Canon EF lenses to deliver high quality
imaging performance.
Optical Image Stabilizer
Canon’s Optical Image Stabilizer tech-
nology makes handheld photography
possible in more low-light situations
than ever before. When camera shake occurs using normal
lenses without Optical Image Stabilizer technology, the
image projected on the image sensor also shakes, often
resulting in blurred images at slower shutter speeds. With
Canon Image Stabilized lenses, a special group of lens
elements automatically shifts position, compensating for
the movement and stabilizing the image. This compensatory
effect adds the equivalent of up to 4-stops (depending
upon the lens), expanding a photographer’s handheld
options dramatically.
With Optical IS in the lens, C anon can equip each IS lens
with the stabilizer it needs for effective shake correction.
Other systems are limited by how far they can move an
image sensor, and as a result, their stabilization is less
effective as telephoto lengths get longer. Also, Optical IS
can be seen right in the viewfinder — impossible with
some other stabilizer systems.
Taken with EF 100mm f/2.8L Macro IS USM
with Hybrid Image Stabilizer
Angle camera shake
(oscillating)
Shift camera shake
is their remarkable optical performance — the result of
sophisticated Canon technologies such as Ultra-low
Dispersion UD glass, fluorite and aspherical elements, and
Super Spectra Coating.
Diffractive Optics
Innovative Canon diffractive optics (DO) technology
results in high-performance lenses that are more compact
than traditional refractive designs. Conventional glass
lens elements disperse incoming light, causing chromatic
aberration. The Canon multilayer diffractive elements are
constructed by bonding diffraction gratings to the surfaces
of two or more lens elements. These elements are then
combined to form a single multilayer DO element. The DO
element’s dispersion characteristics are designed to
cancel chromatic aberrations at various wavelengths
when combined with conventional glass optics. This
results in outstanding reductions in “color fringing” —
chromatic aberration — rivaling that of L-Series telephoto
lenses. Canon DO technology is ideal for telephoto lens
optics and makes possible significant size reduction while
maintaining superb optical performance.
Ultrasonic Motor
Canon developed the
world’s first lens-
based Ultrasonic Motor (USM) to
power the lens autofocus mecha-
nism. Instead of large noisy drive
trains powered by conventional
motors, Canon USM lenses drive the lens using the fine
electronic vibrations created by piezoelectric ceramic
elements. The focusing action of the lens is fast and
quiet, with virtually instantaneous stops and starts. USM
lenses also draw minimal power from the camera,
ensuring longer battery life. Canon makes two types of
Ultrasonic Motor lenses. Ring-type USM lenses, found in
large aperture and super-telephoto designs, permit
manual focusing without first switching out of the Auto
mode. Micro USM designs bring the performance
benefits of Canon USM technology to a wide assortment
of affordable EF lenses.
Ring-type USM