Canon 86 用户手册
Image Stabilizer
How the Optical Shift Image Stabilizer (Shift-IS) Works
When the lens moves, the light rays from the subject are bent relative to the optical axis, resulting in an
unsteady image because the light rays are deflected. By shifting the IS lens group on a plane perpendicular to
the optical axis to counter the degree of image shake, the light rays reaching the image plane can be steadied.
Since image shake occurs in both horizontal and vertical directions, two shake-detecting sensors for yaw and
pitch, detect the angle and speed of movement and send this information to a high-speed 32-bit
microcomputer, which converts the information into drive signals for the IS lens group. Then the actuator
moves the IS lens group horizontally and vertically thus counteracting the image shake and maintaining the
stable picture. The Shift-IS component is located within the lens groups and is most effective for lower
frequency movements caused by platform vibration or wind effect without increasing the overall size and
weight of the master lens.
unsteady image because the light rays are deflected. By shifting the IS lens group on a plane perpendicular to
the optical axis to counter the degree of image shake, the light rays reaching the image plane can be steadied.
Since image shake occurs in both horizontal and vertical directions, two shake-detecting sensors for yaw and
pitch, detect the angle and speed of movement and send this information to a high-speed 32-bit
microcomputer, which converts the information into drive signals for the IS lens group. Then the actuator
moves the IS lens group horizontally and vertically thus counteracting the image shake and maintaining the
stable picture. The Shift-IS component is located within the lens groups and is most effective for lower
frequency movements caused by platform vibration or wind effect without increasing the overall size and
weight of the master lens.
: The letters " " come from the word "Excess", an indication that the new generation of lenses exceeds
all conventional lens specifications and concepts by using breakthrough technologies. allows for higher
specification lenses in smaller and lighter packages.
all conventional lens specifications and concepts by using breakthrough technologies. allows for higher
specification lenses in smaller and lighter packages.
TELE
XJ86
x
13.5B IE-
II
13.5-1161mm 1:2.4
XJ86x9.3B IE-
II
9.3-800mm 1:1.7
Optical Performance with an 86x
Zoom Ratio and improved Wide Angle
The DIGISUPER 86II xs & DIGISUPER
86II TELE xs are an extraordinary field
lens that utilizes Canon's new optical
design concept "POWER OPTICAL
SYSTEM" and " -Element".
By adopting this new technology and
concept, the DIGISUPER 86 xs realizes
the necessary optical performance for
HDTV, with increased zoom ratio of 86x,
improved wide angle of 9.3mm while still
maintaining the size equivalent to that of
current SDTV lenses.
86II TELE xs are an extraordinary field
lens that utilizes Canon's new optical
design concept "POWER OPTICAL
SYSTEM" and " -Element".
By adopting this new technology and
concept, the DIGISUPER 86 xs realizes
the necessary optical performance for
HDTV, with increased zoom ratio of 86x,
improved wide angle of 9.3mm while still
maintaining the size equivalent to that of
current SDTV lenses.
-Element & POWER OPTICAL
SYSTEM
Canon has developed this breakthrough
optical design concept using a newly
developed optical element in the most
effective way.
We have named this design concept the
"Power Optical System" which achieves
higher specifications and quality using the
optical " -Element" which virtually
eliminates aberrations.
optical design concept using a newly
developed optical element in the most
effective way.
We have named this design concept the
"Power Optical System" which achieves
higher specifications and quality using the
optical " -Element" which virtually
eliminates aberrations.
Image Stabilizer
The history of field lenses is a history of
zoom ratio/focal length extension. It came
to a point where the industry thought it
zoom ratio/focal length extension. It came
to a point where the industry thought it
would be impossible to push the envelope
any further. The telephoto focal lengths of
the lens got so long that even the slightest
amount of wind or operator movement
would cause image shake and viewing the
picture became intolerable, this was before
Canon announced the incredible
magnification DIGISUPER 86 xs zoom
lens. Canon, renowned for its optical
image stabilization technologies,
developed another new stabilization
solution for the broadcast field lens, a
built-in Optical Shift Image Stabilizer
(Shift-IS) to overcome image shaking at
telephoto focal length. Now the Shift-IS is
employed in the DIGISUPER 86II xs &
DIGISUPER 86II TELE xs.
any further. The telephoto focal lengths of
the lens got so long that even the slightest
amount of wind or operator movement
would cause image shake and viewing the
picture became intolerable, this was before
Canon announced the incredible
magnification DIGISUPER 86 xs zoom
lens. Canon, renowned for its optical
image stabilization technologies,
developed another new stabilization
solution for the broadcast field lens, a
built-in Optical Shift Image Stabilizer
(Shift-IS) to overcome image shaking at
telephoto focal length. Now the Shift-IS is
employed in the DIGISUPER 86II xs &
DIGISUPER 86II TELE xs.
"CAFS" Constant Angle Focusing
System
System
The zooming effect of focus is the
phenomena where the picture size (angle
of view) changes when focusing
(breathing). However, a 32bit CPU
calculates and controls the zoom when
phenomena where the picture size (angle
of view) changes when focusing
(breathing). However, a 32bit CPU
calculates and controls the zoom when
focusing in order to counteract these
phenomena. Thus the DIGISUPER 86II xs
& DIGISUPER 86II TELExs have zero
zooming effect of focus throughout the
whole zoom range.
phenomena. Thus the DIGISUPER 86II xs
& DIGISUPER 86II TELExs have zero
zooming effect of focus throughout the
whole zoom range.
CROSSOVER COMPATIBILITY
Available optionally is the dual aspect
ratio switching system, "CROSSOVER",
for switchable 16:9/4:3 cameras.
ratio switching system, "CROSSOVER",
for switchable 16:9/4:3 cameras.
Latest Generation DIGITAL SERVO
SYSTEM
SYSTEM
Canon's latest generation digital servo
system allows the use of many new
functions such as constant angle of view
while focusing "CAFS" and the selection
of different servo characteristics.
These functions are only possible with a
digital servo system. In addition to these
new functions, the upgrading of software
will be possible when new functions
become available in the future. This
means that the DIGISUPER 86II xs &
DIGISUPER 86II TELExs have
unlimited possibilities.
system allows the use of many new
functions such as constant angle of view
while focusing "CAFS" and the selection
of different servo characteristics.
These functions are only possible with a
digital servo system. In addition to these
new functions, the upgrading of software
will be possible when new functions
become available in the future. This
means that the DIGISUPER 86II xs &
DIGISUPER 86II TELExs have
unlimited possibilities.
Zoom
Focus
Digital
Sensor
Sensor
Digital
Sensor
Sensor
32Bit
CPU
CPU
Motor
Motor
CPU
CPU
Digital Servo System
1.Lens when still.
Image plane
To Subject
2.Lens when jerked downward.
Camera
shake
shake
3.Counteraction by IS lens group.
Corrected light rays
Position of IS lens group
after shifting
after shifting