Canon EOS-1D C Brochure (en)

Image Stabilizer 
Image Stabilizer 
Great images start with great optics. An SLR camera is often defined by the quality, 
breadth and scope of its lens system. As such, Canon lenses alone are reason 
enough to choose the EOS System. Combining some of the world’s most advanced 
optical, microelectronic, and precision manufacturing technologies, EF lenses are 
engineered in Canon’s laboratories, proven 
in the field and beloved by generations 
of photographers. With over  
100 million lenses produced
Canon EF lenses have proven 
they are capable for a multitude 
of photographic situations.
Optical Image Stabilizer
Canon Optical Image Stabilizer technology 
makes handheld photography more practical 
at slow shutter speeds, accommodating more 
low-light shooting situations than ever before. 
Camera shake typically occurs at shutter 
speeds less than 1/ [focal length], resulting in 
image blur. Canon Optical Image Stabilizer 
technology uses miniature sensors and a 
high-speed microcomputer built into the lens. 
The sensors analyze vibrations and apply 
correction via a special stabilizing lens group 
that shifts the image parallel to the focal plane. 
Motion blur is reduced, resulting in a sharper 
image. With Optical Image Stabilization, it’s 
like gaining up to four stops. Canon Optical 
Image Stabilizer technology is built into many 
Image Stabilization: 
It Belongs In the Lens
Because every lens is different, different lenses 
have different Optical Image Stabilizer needs.
•  Reduces motion blur by counteracting camera shake during handheld photography
•  With Optical Image Stabilizer in the lens, Canon can equip each Optical Image Stabilizer lens with  
the stabilizer it needs
•  Found on some telephoto lenses, Optical Image Stabilizer Mode 2 is especially effective when  
doing panned shots
•  With Canon Optical Image Stabilizer, the effects of the stabilization can be seen in the viewfinder –
the image is steadier, making composition more accurate
How the Image Stabilizer Works — The Optical Image 
Stabilizer shifts a lens group in parallel to the focal plane. 
When the lens jerks due to camera shake, the light rays 
from the subject are bent relative to the optical axis, 
resulting in a blurred image. Camera shake is detected 
by two gyro sensors (one each for the yaw and pitch). The 
gyro sensors detect the angle and speed of the camera 
shake caused by handheld shooting. By moving select 
lens elements according to how the entire lens is being 
shaken, the image passing through the lens can be 
steady and sharp when it hits the imaging sensor. The 
figure on the extreme right shows what happens when 
the lens is jerked downward. The center of the image 
moves downward on the focal plane. When the Optical 
Image Stabilizer lens group shifts downward, the light 
rays are refracted so that the image center returns to the 
Optical Image Stabilizer Units
center of the focal plane. Since image shake occurs  
in both the horizontal and vertical directions, the  
Optical Image Stabilizer lens group can shift vertically 
and horizontally on a plane perpendicular to the optical 
axis to counteract the image shake.
Optical Image Stabilizer  
Parallel Movement Principle
1: No Camera Shake
2: Lens Front Shake Downward
3:  Image-stabilizing group counteracting 
downward camera shake
Adam Jones
Explorer of Light
For two decades I’ve 
used Canon EOS 
lenses professionally –  
they always deliver 
the superior results 
my clients and I 
demand. No matter 
what the situation, 
EOS lenses allow me 
complete creative 
freedom, reliability, 
and unsurpassed  
©Adam Jones
photography, however, the image blur caused 
by linear camera shake – when the camera 
moves parallel to the subject – is more  
pronounced. Optical Image Stabilizer is 
designed to counteract rotational or linear 
camera shake and works well for most camera 
shooting situations. To help compensate for 
linear camera shake, an acceleration sensor 
determines the amount of shift-based camera 
movement. Canon Hybrid Image Stabilizer 
technology employs a highly sophisticated 
algorithm that combines the feedback of both 
the acceleration sensor and angular velocity 
sensor (found in Hybrid OIS technology), and 
moves the image stabilizer lens elements, 
effectively compensating for both rotational 
and linear camera shake. Hybrid IS enhances 
the effects of Optical Image Stabilizer, 
especially during macro shooting, which may 
be difficult for conventional image stabilization 
Linear Camera Shake
EF and EF-S lenses, allowing for more movement 
of the stabilizing lens group. Especially with 
telephoto lenses, as the lens focal length 
increases, the effect of shake and the degree 
of correction needed to cancel it increase as 
well. With the Optical Image Stabilizer in the 
lens, Canon can equip each IS lens with a 
stabilization unit optimized for the focal 
lengths and optical characteristics unique  
to that lens.
Hybrid Image Stabilizer 
During normal shooting  
situations, sudden camera 
movement is rotational and can cause  
significant image blur. During macro or close-up 
 Refers to EF Lenses, EF-S Lenses and Cinema Lenses produced worldwide from 1987 to First Half of 2014.