Specifications

usa.canon.com/eos
7
EOS CAMERAS
Dual Pixel CMOS AF is a cutting-edge Canon
technology, made possible by a sophisticated
redesigning of the CMOS sensor. Traditionally,
image sensors have one photodiode per pixel,
but the CMOS sensor on the EOS 70D camera
has two photodiodes per pixel, enabling each
pixel on the sensor to both perform phase-dif-
ference detection autofocus and capture light
– a first for EOS cameras. Phase-difference
The Genius of Pixel Based AF
Dual Pixel CMOS AF represents a rethinking
of how to achieve and maintain focus in Live
View. Since the camera’s mirror is up during
Live View shooting, the viewfinder’s conven-
tional phase-difference detection AF cannot be
used. As a result, most cameras with Live View
shooting have sensor-based AF systems that
use contrast detection AF, which calculates
focus by noting contrast differences in the
image and moving the lens back and forth to
achieve focus. This takes considerably longer
than phase-difference detection. For speedier
focus, Dual Pixel CMOS AF locks and tracks
focus on the first try, without hesitation.
detection AF enables the camera to calculate
proper lens placement for precise focus nearly
instantly, so autofocus is achieved more
smoothly and quickly than ever in Live View.
This unique Dual Pixel CMOS AF system
accomplishes autofocus on 80% of the image
plane, vertically and horizontally, and helps
ensure virtually no loss in image quality.
Signals from each photodiode
are detected (illustration of two
image signals being detected)
The amount of lens drive is
calculated from the amount of
signal difference (amount of
shift) in the AF points
This differs from existing
contrast AF in that it makes it
possible to focus on the first
try, without hesitation
Focus is achieved
The signals of photodiode A and B
are in agreement.
The same principle as phase-difference detection AF
Driving
the lens
=
photodiode
signals
photodiode Aphotodiode B
Dual Pixel CMOS AF applicable area
The shooting (Live View display) area
Dual Pixel CMOS AF structure
Compatible with 103
*
Canon
EF Lenses
103
*
Canon EF lenses are able to fully
realize the benefits of Dual Pixel CMOS AF.
Compatible lenses greatly expand creative
and compositional possibilities so users can
enjoy a wide range of endeavors made
possible through various lenses whether
shooting still images or video. Canon STM
lenses help ensure quiet operation during
video capture. In short, thanks to Dual Pixel
CMOS AF, Canon’s renowned superb optics
can now combine with Live View and video
capture as never before, offering expanded
creative possibilities.
Realize the Freedom of Live View
Live View autofocus powered by Dual Pixel
CMOS AF is phenomenally accurate and faster
than ever. With the freedom of angle inherent
to a Vari-angle LCD monitor (as featured on
the EOS 70D digital SLR camera), you can
comfortably and conveniently shoot more
subjects, from more angles and vantage
points, as the situation dictates – confident
in the camera’s ability to provide outstanding
focus. Users can also take full advantage of
Live View-only features like Touch AF and Touch
Shutter for even more compositional freedom.
Shoot Video Like a Camcorder
Dual Pixel CMOS AF powers autofocus
performance similar to that of a camcorder
– but on a DSLR camera! Incredibly precise
focus is achieved quickly and over a large
area of the frame. Focus transitions, as when
acquiring focus or changing focus between
subjects, are smooth and natural, reminiscent
of how the human eye focuses. And once
focus is achieved, Dual Pixel CMOS AF helps
ensure that it stays locked in. Combined with
the predictive power of Movie Servo AF and
Canon Face Detection technology, even
your rapidly-moving subjects remain crisp
and clear.
Enabling the Next Generation of Live View Shooting
Dual Pixel CMOS AF is a cutting-edge technology from Canon that unlocks the potential of Live View,
changing forever the way users will capture still images and video with a DSLR camera. Dual Pixel
CMOS AF powers incredibly smooth and consistent autofocus – similar to that of a camcorder – during
video shooting. It also enables phenomenally accurate and faster-than-ever focus through an LCD
monitor, allowing the photographer to realize the compositional freedom of Live View. And
compatibility with 103
*
Canon EF lenses empowers expanded creative options. This
revolutionary autofocus system unleashes wonderful new possibilities for creative expression
with dynamic, high quality still and video capture choices for more situations than ever before.
usa.canon.com/eos
7
* As of July 2, 2013.
A Revolution in Autofocus
Unlocks the Potential of Live View