Canon's proprietary optical technology that realizes high
image quality EF cinema lenses*
Aspherical lens manufacturing technology
Spherical lens refracts more in the periphery portions than in the center.
For that reason, it is impossible to collect a beam of light at the optimal
Focal point alignment with
one point. This is called spherical aberration, and this aberration can be
corrected by combining multiple lenses. On the other hands, the
aspherical lens can collect the light that passes through both the center
portion of the lens and the periphery portion of the lens at one point. The
performance obtained by using several spherical lenses can be achieved
using a single aspheric lens. Therefore, the number of lenses in the entire
lens conﬁguration can be reduced. This technology contributes to a
reduction in the size and weight of the lenses and at the same time
Spherical aberration of
makes it possible to produce sharp images owing to its outstanding
optical performance. Canon produces high-performance aspherical lenses
by means of advanced manufacturing technologies such as aspherical
surface grinding and glass molding processes.
Reducing changes in angle of view to enable stable framing
The CN7x17 KAS S has adopted the inner-focus-type lens formed by a three-lens group, which is a highly proven conﬁguration for
broadcast and cinema applications. The lens reduces changes in angle of view that are caused by focusing.
3-group inner focus system established for broadcast and cinema use
Canon's surperb optical material technology
[UD and Hi-UD glasses]
The development of glass materials with an anomalous dispersion
In theory, chromatic aberration cannot be completely
eliminated in standard optical glass, and a slight
characteristic similar to ﬂuorite has been progressing recently. These efforts
chromatic aberration always remains. A material
have produced Ultra-low Dispersion (UD) glass. Since UD glass has low
called ﬂuorite (CaF2) can be used to resolve this
dispersion as well as an anomalous dispersion characteristic, effects similar
problem in optical glass and enables ideal chromatic
to those of ﬂuorite can be achieved by selecting the proper combination.
aberration correction. Fluorite has been known to
Furthermore, Hi-UD glass offers high refraction in addition to low and
have an anomalous dispersion characteristic (which
anomalous dispersion characteristics of UD glass, which enables spherical
optical glasses do not have), which is effective in
aberration correction as well as chromatic aberration. Hi-UD glass is used
eliminating chromatic aberration. Fluorite lenses have
for Canon lenses and effectively functions to reduce aberration ﬂuctuation
been used in a number of Canon lenses and
caused by focusing and zooming, in addition to the chromatic aberration
effectively correct the chromatic aberration.
that occurs on the telephoto side.
Comparison of Color Aberration Correction
Arti cial uorite crystals
Ordinary optical glass
Blue Green Red
Large color aberration
*: Technology applied to the lenses would differ depending on the model.
Max. Relative Aperture (T-Number)
Angle of View
1.9:1 26.2 × 13.8mm
M.O.D.* (from image sensor)
Object Dimensions at
1.9:1 26.2 × 13.8mm
Approx. Size (WxHxL)
Pitch of Follow Focus Gear
* M.O.D. = Minimum Object Distance
** Pitch of focus gear is also available for cinema accessories.
CN7×17 KAS S/P1
North & South America
Canon U.S.A., Inc.
Canon Mexicana S.de R.L. de C.V.
Imaging Technologies & Communications Group
Professional Broadcast & Film Industry Business
Broadcast and Communications Sales & Marketing
Blvd. Manuel Avila Camacho No.138 Col. Lomas
One Canon Park
de Chapultepec Mexico 11000 D.F.
Melville, NY 11747-3336
Tel:555249 4900 Fax:555249 4901
Canon Canada, Inc.
Broadcast and Communications Div.
6390 Dixie Road
100 Park Blvd. Itasca, IL 60143
Mississauga, Ontario, L5T 1P7, Canada
5625 Oakbrook Pkwy. Norcross, GA 30093
Canon Europe Ltd
Broadcast products Div.
3 The Square, Stockley Park
15955 Alton Parkway lrvine, CA 92618
United Kingdom UB11 1ET
Tel:+44 (0)20 8588 8140
Fax:+44 (0)20 8588 8603
Email : firstname.lastname@example.org
3200 Regent Blvd. lrving, TX 75063
Tel & Fax:+1(954)757-0980
Small color aberration
CN7x17 KAS S/E1
CN7x17 KAS S/P1
1:2.95 at 17-91mm
1:3.9 at 120mm
75.2 × 44.2
12.5 × 6.6
0.85m / 2.8'
92.1 × 48.5cm at 17mm
12.7 × 6.7cm at 120mm
174.2 × 125.0 × 262.9mm
174.2 × 125.0 × 254.9mm
6.86 × 4.92 × 10.35in.
6.86 × 4.92 × 10.04in.
Canon Australia Pty. Ltd.
(ICP GROUP 5)
1 Thomas Holt Drive, North Ryde, NSW 2113,
30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo
Canon Singapore Pte Ltd.
Canon (China) Co., Ltd.
1 HarbourFront Avenue, #04-01 Keppel Bay Tower,
Broadcast Equipment Products
15F Jinbao Building No.89 Jinbao Street
Dongcheng District, Beijing 100005, China
Canon Korea Consumer
Canon Hongkong Co., Ltd.
Canon Bldg. 5F, 168-12 Samseong-dong,
19F The Metropolis Tower, 10 Metropolis Drive,
Gangnam-gu, Seoul, 135-090, Korea
Hunghom, Kowloon, Hong Kong
Speci cations subject to change without notice.
CN 7 17 KAS S