Owner's Manual

Canon’s proprietary optical technology that realizes
high image quality EF Cinema lenses*
Canon's superb optical material technology
Lens with ultra-long focal length, 4K optical performance, and high carryability
Multilayer coating technology that reduces lens
flare and ghosting
[Fluorite]
Theoretically, a slight chromatic aberration
always occurs in standard optical glass. The
use of fluorite resolves this issue by making
the ideal chromatic aberration correction.
Many of Canon’s zoom lenses demonstrate a
correction effect particularly at the telephoto
side that has a large aberration.
Theoretically, in order to shoot an object dimension in Super 35mm equivalent to that of a 2/3” format camera lens, it is necessary
to have a focal length that is about 2.7 times longer, which significantly affects the size of the lens. To obtain the brightness of a
long focal length lens, a large diameter lens is required, thus making the size of the lens front huge. Because there is a close
relationship among focal length, optical performance, and size of the lens, highly advanced technology is required to achieve the
proper optical balance among them.

Canon has put together industry cutting-edge technologies such as advanced optical simulation technology, as well as the
optimal layout of the glass and mechanical components, wide-diameter aspherical lens technology, and the most suitable
optical glass materials to develop a lens that achieves a high level of total balance.
The newly developed EF Cinema lenses and EF lenses have a coating that is
optimized for digital camera photography. For example, these lenses are provided
with the optimal multilayer coating to prevent the reflection of incident lights on a
lens and to reduce flare and ghosting. The EF Cinema lenses use an anti-reflection
lens coating that further reduces the occurrence of flare and ghosting.
[UD and Hi-UD glasses]
An Ultra-low Dispersion (UD) glass has characteristics similar to fluorite. Since a UD glass has low
dispersion as well as abnormal dispersibility, it can produce an effect similar to fluorite with an
optimal layout of the glasses. A Hi-UD glass has a high refractive index and provides chromatic and
spherical aberration correction effects while also providing the low dispersion and abnormal
dispersibility of a UD glass. A Hi-UD glass is used in such products as zoom lenses and works
effectively to reduce the aberration fluctuations caused by focusing and zooming, in addition to
reducing the chromatic aberration that occurs at the telephoto side.
Aspherical lens technology
A spherical lens refracts more in the peripheral parts than in the center.
For that reason, these lenses are subject to spherical aberration. On the
other hand, an aspherical lens can gather all light that passes through
the center and peripheral parts of the lens at one point. This technology
makes it possible to use an aspherical lens to provide the same
correction effect that would normally need several spherical lenses, thus
reducing the overall number of lenses required. This technology
therefore helps produce sharp images through high optical
performance, as well as being compact and lightweight.
*: Technology applied to the lenses would differ depending on the model.
PUB.0190W435
Specifications subject to change without notice.
North & South America
Canon U.S.A., Inc.
Imaging Technologies & Communications Group
Broadcast and Communications Sales & Marketing
Division(Headquarters)
One Canon Park
Melville, NY 11747-3336
Tel:[phone]
Email:[e-mail]
http://www.canonbroadcast.com/
Chicago
100 Park Blvd. Itasca, IL 60143
Tel:[phone] Fax+1:[phone]
Atlanta
5625 Oakbrook Pkwy. Norcross, GA 30093
Tel:[phone] Fax:[phone]
Los Angeles
15955 Alton Parkway lrvine, CA 92618
Tel:[phone] Fax:[phone]
Dallas
3200 Regent Blvd. lrving, TX 75063
Tel:[phone] Fax:[phone]
Latin America
Tel & Fax:[phone]
Mexico
Canon Mexicana S.de R.L. de C.V.
Professional Broadcast & Film Industry Business
Department
Blvd. Manuel Avila Camacho No.138 Col. Lomas
de Chapultepec Mexico 11000 D.F.
Tel:[phone] Fax:[phone]
Canada
Canon Canada, Inc.
Broadcast and Communications Div.
6390 Dixie Road
Mississauga, Ontario, L5T 1P7, Canada
Tel:[phone] Fax:[phone]
Europe/Africa/Middle East
Canon Europe Ltd
Broadcast products Div.
3 The Square, Stockley Park
Uxbridge Middlesex
United Kingdom UB11 1ET
Tel:[phone]
Fax:[phone]
Email : [e-mail]
http://www.canon-europe.com/tv-products/
Australia
Canon Australia Pty. Ltd.
CCI Division
Building A, The Park Estate, 5 Talavera Road,
Macquarie Park, NSW 2113, Australia
Tel:[phone]
China
Canon (China) Co., Ltd.
Broadcast Equipment Products
15F Jinbao Building No.89 Jinbao Street
Dongcheng District, Beijing 100005, China
Tel:[phone] Fax:[phone]
http://www.canon.com.cn
Canon Hongkong Co., Ltd.
19F The Metropolis Tower, 10 Metropolis Drive,
Hunghom, Kowloon, Hong Kong
Tel:[phone]
http://www.canon.com.hk
Asia/Japan
Canon Inc.
(ICP GROUP 5)
30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo
146-8501, Japan
Tel:[phone] Fax:[phone]
Canon Singapore Pte Ltd.
1 HarbourFront Avenue, #04-01 Keppel Bay Tower,
Singapore 098632
Tel:[phone]
http://www.canon.com.sg
Canon Korea Consumer
Imaging Inc.
Canon Bldg. 5F, 168-12 Samseong-dong,
Gangnam-gu, Seoul, 135-090, Korea
Tel:[phone]
http://www.canon-ci.co.kr
CINE-SERVO
CN20×50 IAS H
Focal point alignment with
aspherical lens
Spherical aberration of
spherical lens
Rough uorite
Articial uorite crystals
Fluorite lenses
Comparison of Color Aberration Correction
Ordinary optical glass
Fluorite
Large color aberration
Small color aberration
Blue Green Red
SPECIFICATIONS
CN20x50 IAS H/E1 or CN20x50 IAS H/P1
* M.O.D. = Minimum Object Distance
Built-in extender
Mount
Image format
Focal Length
Zoom Ratio
Max. Relative Aperture
(T-number)
Iris Blades
Angle of view
[1.9 :1 26.2 × 13.8]
M.O.D.*
Object dimension at M.O.D
[1.9 :1 26.2 × 13.8]
Front Diameter
Approx. Size(W × H × L)
Approx. Mass
Pitch of gear
1.0×
50 – 1,000mm
1:5.0 at 50 − 560mm
1:8.9 at 1,000mm
1.5×
75 – 1,500mm
1:7.5 at 75 − 840mm
1:13.35 at 1,500mm
EF or PL
Super35mm
20×
29.4° × 15.7°at 50mm
1.5° × 0.8°at 1,000mm
19.8° × 10.5°at 75mm
1.0° × 0.5°at 1,500mm
11
98.9 × 52.1cm at 75mm
5.2 × 2.7cm at 1,500mm
148.3 × 78.1cm at 50mm
7.8 × 4.1cm at 1,000mm
3.5m / 11.5’ (From image sensor) 1.54m / 5.1’ (From lens front with macro)
φ
136mm
[EF Mount] 175 × 170.6 × 413.2mm
[PL Mount] 175 × 170.6 × 405.2mm
6.6kg/14.55lbs
Focus : 0.5mm or 0.8mm Zoom : 0.5mm Iris : 0.5mm
DIMENSIONS
CN20x50 IAS H/P1
MACRO BUTTON
EXTENDER LEVER
F.B.ADJUSTING LOCK SCREW
68.7
99.5
170.6
95.1
175
AUX SWITCH
IRIS OPERATION
CHANGE-OVER SWITCH
MEMORY SWITCH
RETURN SWITCH
ZOOM OPERATION SWITCH
MOMENTARY IRIS AUTO SWITCH
VTR SWITCH
ZOOM SPEED ADJUTING VOLUME
93.7
140.8
ZOOM LEVER
348.1
405.2
488.8
83.5
TIE CABLE
UNC3/8-16
SUPPORT ROD