Owner's Manual
Super35 Meets Super Telephoto
CINE-SERVO
CN20×50 IAS H
With the advance of digital cinematography, most new digital cine cameras have made use of the entrenched large global inventory
of 35mm motion picture film lenses. Digital cinematography has squarely encompassed the emerging 4K movement – in both the
television-centric UHD and the cinema-centric 4K digital motion imaging production formats.
In the broadcast industry, large-format cameras and lenses for digital cinema are now being adopted for applications such as dramas,
documentary programs, and promotional videos because of their superb imaging characteristics.
Documentary, sports coverage and natural history programs seek extended focal ranges. Such focal ranges in the Super 35mm image
format size with full 4K optical performance, pose significant challenges to size and weight of the lens.
In recognition of this pressing production need, the CN20×50 IAS H ultra-telephoto zoom lens in Super 35mm format has been
developed, significantly extending the imaging capabilities of 4K large-format cameras.
The CN20x50 IAS H is a zoom lens for the Super 35mm format,
having the superiority of the longest focal length(*) of 1500mm
(with a 1.5× extender) and the highest zoom ratio(*) of 20× in
the world of the Super 35mm format that offer a whole new
image expression.
Built-in 1.5× "4K" extender is another first in the large format
optical arena, which maintains excellent 4K image quality.
The lens weighs only 6.6 kg and has an overall length of only
405.2mm (**) a combination that will readily support carryable
documentary, natural history and sports shooting.
Powerful 4K images created by unprecedented 1500mm focal length
4K Optical Performance
The 4K optical performance is carefully managed across the entire image plane to ensure superb subjective sharpness especially
on the wider angle settings. Sophisticated computer simulation in the design phase produced an excellent final optimization that
maintains the 4K optical performance over the entire focal range even when the built-in extender is in use and over an object
distance ranging from the minimum object distance to infinity.
New glass materials assisted in the goal of achieving the necessary tight control of optical aberrations.
The most contemporary multilayer optical coatings ensure very high contrast by their superb control of black reproduction
augmented by optical and mechanical design innovations that substantially reduced flare and any internal reflections.
Similar attention to minimization of ghost images and other highlight-related color bleeding extend the operational contrast range
of the lens.
f = 50mm f = 1000mm
Conversion Table
(*) As of September 2014
(**)
〈
PL Mount
〉
CN20x50 IAS H/P1
：
405.2mm
〈
EF Mount
〉
CN20x50 IAS H/E1
：
413.2mm
Super 35mm
2/3”
35mm
Focal Length(mm)
50 – 1,000
App. 20 – 370
App. 75 – 1,460
with 1.5× Ext(mm)
75 – 1,500
App. 30 – 560
App. 110 – 2,190
The lens has a 1,500mm focal length at the telephoto end (with a 1.5x extender), a total length of 405.2 mm (PL mount), and a weight of 6.6 kg. Even when shooting
documentaries in a harsh natural environment, this lens enables unprecedentedly expressive and dynamic 4K images at a distance from the subject.
Display for easy user settings
The display of the lens drive unit enables easy operation of digital functions
such as speed and frame presets and shuttle shot in the same way as Canon’s
high-end broadcast portable television lenses.
Speed Preset
：
A specic zoom speed can be preset in memory
Frame Preset
：
An angle of view can be preset in either of two memories
Shuttle Shot
：
Automatically shuttle between two focal length.
Lens with ultra-long focal length, 4K optical performance, and high carryability
Servo Cine Lens
The CN20×50 IAS H has a newly designed digital servo system that employs the
miniature 16-bit optical encoders that endow the control of zoom, iris, and
focus with the same legendary precision for which Canon is world-famous in
the 2/3” ENG/EFP domain. This new digital drive system is compact and
lightweight while providing impressive power to actuate the full 20:1 zoom
range in 1.5 seconds – ensuring image capture in critical moments.
Wide-ranging zoom speeds up to a maximum of 180 seconds support special
creative shooting. The encoders do not require any initialization operation and
accordingly the system starts immediately upon switch-on.
A 12-pin connection cable from the drive unit carries the standard serial
communication for broadcast lenses – ensuring that the CN20×50 IAS can be
used with all professional Super35mm digital cine cameras. The camera
supplies power to the drive unit via this connection and remote iris operation is
supported.
Support for Virtual Image
Data Output
Studio Broadcast Lens
Controllers
When used in a studio lens-camera
conguration the CN20×50 IAS H
drive unit has three 20-pin
connectors that facilitate the use
of Canon standard broadcast
zoom and focus controllers (such
as the ZSD-300D and FPD-400D).
Flange-back adjustment mechanism
The lens enables ange-back adjustment with an operation as easy as that of
broadcast ENG lenses.
Macro function
The lens enables macro shooting with an operation as easy as that of
broadcast ENG lenses.
Iris close function
The lens can close the iris completely, which is necessary to calibrate black
balance.
Immediate system start-up
The drive unit has a high-performance encoder so that the lens requires no
initialization. Since the encoder does not require the initialization operation
when the lens is powered on, the system can be started immediately.
Robustness and durability
The lens features an optimal housing structure made by combining the
know-how acquired through the development of Canon broadcast lenses with
the latest simulation technologies. The lens provides a robustness and
durability that can endure in severe operating environments for broadcast
applications.
Operability and functions ideal for broadcast
lens users
The lens oers the equivalent servo
operation feel as broadcast portable
lenses for all focus, zoom, and iris
controls. The focus ring is provided
with a knurled rubber for superior
operability, which allows the
equivalent manual operation feel as
broadcast portable lenses.
Virtual
20pin connector
180°
Standard Broadcast Camera Interface
FPD-400D
Focus control
20p
20p
ZSD-300D
Zoom control
World’s rst built-in 1.5× “4K”extender
The lens has a built-in 1.5× extender, which makes it the rst zoom
lens with a servo unit for Super 35mm sensor cameras. The lens is
capable of 4K resolution performance even when a 1.5× extender is
inserted.
The drive unit has a 20-pin
connector which outputs 16-bit
precision data for zoom, iris, and
focus to support precision virtual
imaging systems.
Imaging Excellence with Optimized Operational Performance
The lens is equipped with multiple blades
that make the aperture diaphragm
rounder and achieves a soft and natural
blur eect. It has also adopted an odd
number of blades so that the beams of
received light spreads without aecting
facing diraction light each other and
creates a soft and elegant beam of light
when optimal focus is achieved.
Handheld Cinematography Shooting
Compatible with cinema industry standard
Super 35mm image senser
Support for cinema industry standard accessories
The lens can be used with standard accessories in the cinema industry, such as a
matte box, follow focus gear systems, and electronically operated controllers.
The focus ring is equipped with 0.8mm and 0.5mm gear modules and the zoom
ring is equipped with a 0.5mm gear module, and these make it possible to use the
lens with standard accessories in the cinema industry.
(The iris ring is equipped with a 0.5mm gear module.)
Easier-to-read ring markings
•The lens provides focus ring markings on angled
surfaces on the lens barrel, which makes it easy to
read the focus settings from behind the camera.
•Each ring marking is indicated on both sides of the
lens to facilitate operation when the cinema camera
users use the lens at a movie shooting location. The
ring markings indicated on one side of the barrel are
coated with luminous paint so that they can be
easily read even in the dark.
•The focus ring markings are indicated both in feet
and metric units (ft/m), making it unnecessary to
replace the focus ring in order to switch from feet to
metric and vice versa.
Easy-to-understand focal length
indications
The focal length is indicated on the side of the lens
front barrel. The lens adopts customary “focal length
indications” normally used by cinema camera users.
19mm-diameter rod system
The lens is equipped with a support holder for cinema lens support
rods that can be used with 19mm-diameter rod systems. An
extension shaft (included in the product) is required to use the
19mm-diameter rod system.
11-blade aperture diaphragm
EF Cinema Lens 11 blades 9 blades 6 blades
Compliant with wide-ranging communication standards and with a lens-to-camera communication function for added convenience
EOS Lens Data Communication
• For the CN20×50 IAS H/E1 using the EF mount, data management functions and image compensation are enabled by Canon’s direct
electrical communication between Cinema EOS cameras and this lens.
Cooke /i Lens Camera Data
• The lens supports the widely accepted Cooke /i Technology for direct transmission of lens data to the camera.
• Furthermore, the lens is provided with the standard 12-pin interface connector that is used in the broadcast industry. Therefore, the lens can
perform the same type of communications as conventional broadcast portable lenses, such as transmission of focus, zoom, and iris position data
as well as remote-controlled operation of the iris.
Focus indicators are marked
on the inclined surface.
The focus ring markings are
indicated both in feet and
metric units(ft/m).
Pitch:0.8 Pitch:0.5 Pitch:0.5
Not all productions will require
the digital servo drive, with
many preferring traditional
manual cinematography style
shooting – Canon has designed
the system so that the servo unit
can be removed. In this mode the
manual focus control has a total rotation angle of 180 degrees. If
the drive unit is removed for a specic production and then
re-mounted – this can be done in any rotation position and there is
no need to adjust gear positions (zoom, iris, and focus).
®