Canon DIGISUPER 86AF 产品宣传册
Recently there has been a greater demand for broadcast HDTV production and the requirement for
accuracy in focusing has risen in response to this demand. Canon has been and continues to be a pioneer
in the design of broadcast lens and meets this demand with the introduction of a revolutionary HDTV
Auto Focus System. For many years the market has been requesting this unique technology for HDTV
production and the Auto Focus System has now been adapted into several of Canon’s DIGISUPER HDTV
zoom lenses. Canon has implemented Auto Focusing into the DIGISUPER 86 xs which is already known
for its optical performance and ease of operation due to its optical image stabilizer. This technology
assists professional camera operators in concentrating on the action/ beauty shots while maintaining the
images in focus. Canon’s advanced Auto Focusing for the DIGISUPER HDTV Zoom Lens employs the
TTL-Secondary Image Registration Phase-detection system, originally developed for single-lens reflex
still cameras, in order to pursue both high accuracy and a high tracking capability for broadcast HDTV.
accuracy in focusing has risen in response to this demand. Canon has been and continues to be a pioneer
in the design of broadcast lens and meets this demand with the introduction of a revolutionary HDTV
Auto Focus System. For many years the market has been requesting this unique technology for HDTV
production and the Auto Focus System has now been adapted into several of Canon’s DIGISUPER HDTV
zoom lenses. Canon has implemented Auto Focusing into the DIGISUPER 86 xs which is already known
for its optical performance and ease of operation due to its optical image stabilizer. This technology
assists professional camera operators in concentrating on the action/ beauty shots while maintaining the
images in focus. Canon’s advanced Auto Focusing for the DIGISUPER HDTV Zoom Lens employs the
TTL-Secondary Image Registration Phase-detection system, originally developed for single-lens reflex
still cameras, in order to pursue both high accuracy and a high tracking capability for broadcast HDTV.
Prominent features of DIGISUPER 86AF
Canon’s unique “Power Optical System” and “X-Element” with a 86:1(9.3-800mm) focal length range has made it possible
to maintain high optical quality while dramatically reducing chromatic aberration. Its superior optical capacity allows the
lens to offer a maximum relative aperture of 1.7 and a minimum object distance of 3.0 meters.
lens to offer a maximum relative aperture of 1.7 and a minimum object distance of 3.0 meters.
Power Optical System and X-Element
• Breakthrough Power Optical System design
- achieves higher specifications and quality
• The X-Element virtually eliminates aberrations
- achieves higher specifications and quality
• The X-Element virtually eliminates aberrations
Internal Focusing System
(Advanced 3 group IF system)
• Achieves wide-angle with reduced distortion
• Minimal variation of chromatic aberration while
• Achieves wide-angle with reduced distortion
• Minimal variation of chromatic aberration while
focusing
• Minimal variation of the center of gravity while
focusing
• Internal focusing system allows for Anti-Dust and
Anti-fog
Optical Shift Image Stabilizer (shift-IS)
• Due to extreme telephoto focal lengths Canon created a
superior optical image stabilization technology that prevents
the picture from shaking due to even the slightest wind or
operator movement
superior optical image stabilization technology that prevents
the picture from shaking due to even the slightest wind or
operator movement
New Generation Digital Servo System
Servo System meets Robotic Requirements
• High resolution zoom and focus servo 13-bit repeatability
10-bit Iris Compatibility
• High resolution iris control
Wide Dynamic Range of Zoom and Focus Servo
Speed
• From ultra slow to high Max speed: Zoom 0.6sec, Focus
0.8sec
CAFS (Constant Angle Focusing System)
• 32-bit CPU calculates and controls the zoom when focusing to
counteract “breathing” (phenomena where picture size/ angle
of view changes when focusing) and has zero zoom effect
of view changes when focusing) and has zero zoom effect
Outstanding features of Canon’s HDTV Auto Focus System
Canon’s Original Sensor Delivers High Focus Performance
• Focusing accuracy that meets full HDTV specifications (1920×1080 pixels)
• Ability to focus from a completely de-focused status without hunting
• Ability to focus on a high speed moving object
• Ability to focus from a completely de-focused status without hunting
• Ability to focus on a high speed moving object
AF Operation Mode
The AF system’s two operation modes is the answer to a professional camera operator’s various demands.
【2 kinds of AF Operation Modes with ACTIVE/HOLD switch】
Mode
FULL TIME AF
PART TIME AF
How AF works
Usually activated
Focus position is locked while the SW
is pushed.
Focus position is locked while the SW
is pushed.
Usually off.
Activated while the SW is pushed.
Activated while the SW is pushed.
Recommended
Application
Application
Sporting event etc.
To follow a moving object.
To follow a moving object.
Studio production etc.
To confirm the best focus position.
To confirm the best focus position.
AF Frame
The camera operator can focus on a specific object by controlling the position of the AF Frame (target area) in the
viewfinder from the Digital Focus Demand FDJ-P31/P41. The size of the AF frame (target area) can be changed
in 3 steps allowing for different subjects and compositions.
viewfinder from the Digital Focus Demand FDJ-P31/P41. The size of the AF frame (target area) can be changed
in 3 steps allowing for different subjects and compositions.
TTL-Secondary Image Registration Phase-detection System
The light transmitting through a pair of the secondary imaging lenses focuses on separate sensors. The following
figure illustrates this state of focusing. The TTL-Secondary Image Registration Phase-detection System determines
the positional relationship between the two images (Refer to “d” in figure) to detect the amount and direction of
defocusing.
figure illustrates this state of focusing. The TTL-Secondary Image Registration Phase-detection System determines
the positional relationship between the two images (Refer to “d” in figure) to detect the amount and direction of
defocusing.
Secondary Imaging Lens
Sensor Output
Sensor A
Sensor B
Correct spacing between
double images
Narrow spacing between
double images
Wide spacing between
double images
d
Line Sensor
Image Plane
Field Lens
In-focus
Forward focus
Rear focus
Focusing Group
Front Relay
Pupil
Variator
Beam Splitting Prism
Internal Extender/
Back Relay
CCD
Compensator
Prism
AF
Canon
Original
Sensor
【Layout of the elements】
Structure of DIGISUPER HDTV Zoom Lens with Auto Focusing
702-0212 キヤノン(株)下丸子本社様 (B)DIGISUPER86AF裏 2007年 3月 28日 水曜日 初校