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Canon CN7x17 KAS S Cine-Servo 17-120mm T2.95 (EF Mount)

BH #CAE17120EF • MFR #9785B001
Canon CN7x17 KAS S Cine-Servo 17-120mm T2.95 (EF Mount)
Key Features
  • ENG-Style Zoom, Focus, and Iris Servos
  • For Broadcast or Cinema Shooting Styles
  • 180° Focus Ring with Knurled Grip
  • Double Focus Markings in Feet and Meters
The Cine-Servo 17-120mm T2.95 with EF mount from Canon is designed to combine the functionality and form factor of a broadcast, ENG-style motorized zoom lens with the optical precision of a cinema zoom. The lens is designed for use on cinema cameras with sensors up to Super 35mm (26.2 x 13.8mm) in size and is suitable for 4K acquisition. With a detachable drive mechanism and support for rod attachment, it is designed to be equally at home whether being used by a solo camera operator or a full production team.
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Canon Cine-Servo 17-120mm T2.95 Overview

  • 1Description
  • 2Broadcast-Style Shooting
  • 3Cinema-Style Shooting
  • 4Lens Design

The Cine-Servo 17-120mm T2.95 with EF mount from Canon is designed to combine the functionality and form factor of a broadcast, ENG-style motorized zoom lens with the optical precision of a cinema zoom. The lens is designed for use on cinema cameras with sensors up to Super 35mm (26.2 x 13.8mm) in size and is suitable for 4K acquisition. With a detachable drive mechanism and support for rod attachment, it is designed to be equally at home whether being used by a solo camera operator or a full production team.

With a 17 to 120mm focal length, the lens features 7x zoom and has a maximum aperture of T 2.95 when set to 91mm or wider. Additionally, it features an 11 blade iris to create circular bokeh patterns as well as to reduce refraction. For ENG-style shooters the lens drive features servo motors powering zoom, focus, and iris. The lens can be connected to the camera either using a standard 12-pin connector or will communicate directly through the lens mount when attached to compatible cameras. Three 20-pin connectors below the servo housing allow many Canon and third-party zoom, focus, and iris controllers to be connected.

Broadcast-Style Shooting
Suitable for Shoulder Mounted Camera Operation
The CN7x17KAS S features the form factor and control layout of typical ENG lenses, and is designed to be friendly for a single camera operator to control while using the camera shoulder mounted. The zoom servo is controlled by rocker with the right hand and focus and iris can be operated manually with the left hand
Support for Standard Broadcast Lens Controllers
The lens is compatible with many 20-pin zoom and focus controllers, allowing the lens to be operated comfortably in a studio tripod or pedestal configuration or remotely, say while mounted on a jib or crane. Compatible controllers include the Canon FPD-400D focus control and the Canon ZSD-300D zoom control
Variable Speed Servo
High speed servo-driven zoom and iris is available for critical situations such as while filming sports or fast action. Meanwhile, slower speed settings are available for more expressive work. With this variability, the zoom duration can be set to last anywhere from 0.5 to 300 seconds
Immediate System Startup
The drive unit features a high-performance encoder so that the lens requires no initialization. This means the system can be used immediately without any delay waiting for it to boot up
Supports Virtual Image Data Output
Via three 20-pin connectors below the servo it is possible to connect an external system to collect 16-bit virtual image data
Standard Broadcast 12-Pin Camera Interface Cable
The lens features the same 12-pin camera interface for power and serial data as found on regular Canon broadcast lenses
Broadcast Lens-Style Focus Ring
In addition to servo zoom, focus, and iris another ENG-derived feature is the knurled focus ring, which is limited to a 180° rotation
Angle of View Shift Suppression
The lens features a three-group inner focus system that is designed to minimize angle of view shift (breathing) that occurs when focusing the lens to ensure stable framing even during rack focus
Flange-Back Adjustment
The flange back may be adjusted in the same manner as on broadcast lenses to simplify the transition between different camera systems with different flange focal distances
Macro Function
The zoom ring features a broadcast lens-style release allowing the lens to quickly set to macro or back again
Fully Closing Iris
The iris may be closed fully for setting camera black balance or other calibration procedures
Cinema-Style Shooting
Detachable Drive Unit
The motor unit housing the servo motors and zoom rocker may be removed for cinema style shooting where full manual control is preferred
Supports Super 35mm Image Sensors
The CN7x17KAS S provides a sufficiently large image circle to cover a Super 35mm sensor
Easier-to-Read Ring Markings
The lens incorporates the following features designed to make the markings easier to read:
  • The focus ring markings are placed on an angled surface so that they can be seen even by an operator sitting behind the camera
  • Each ring marking is printed on both sides of a lens allowing focus-pullers or camera assistants to operate the lens from various positions. Additionally, the markings on one side of the lens have a luminous coating so that they can be read even in the dark
  • The focus ring features both metric and imperial scales (meters and feet) so that you do not have to replace the lens ring to suit users accustomed to different units of measure
Support for Cinema Lens Accessories
The lens is compatible with a wide array of accessories common in the cine industry, including matte boxes, follow focuses, and electronic and wireless controllers. The focus ring features both a 0.8mm pitch cine standard gear ring as well as a 0.5mm Canon pitch ring, the zoom feature a 0.5mm Canon pitch, and there is also a 0.4mm pitch iris gear
Compatible with Lens Support
Because of the weight of the lens it is often deemed helpful or necessary to support the lens using a 15mm or 19mm rod system. This lens makes that possible by allowing you to attach a lens support
Lens-to-Camera Metadata Transmission
The lens communicates directly with Cinema EOS camera through the lens interface. This allows lens metadata such as zoom setting and iris to recorded in the camera. Note that a firmware update may be required for proper communications between the lens and the camera.

In addition the lens features a standard 12-pin broadcast camera interface and can also transmit zoom, focus, and iris data to a camera or other device via this connection
11-Blade Aperture Design
The lens features 11 aperture blades to make lens flares and orbs causes by the bokeh effect as close to round as possible. With fewer blades it is often possible to see the geometric shape of the aperture. Additionally, using an odd number of blades helps prevent diffraction effects that can cause pin-points of light to produce an unwanted "staring" effect
Lens Design
Aspherical Lens Technology
Since spherical lenses refract more in the periphery than the center it is essentially impossible for an image to be sharp across the entire frame. Aspherical lenses, on the other hand, are able to maintain much more even focusing across the image area for more uniform focusing. In addition, it means less elements are required in the lens design helping make it not only sharper, but reducing the size and weight as well
Canon Fluorite Coating
Because glass lenses can never be totally free from chromatic aberration Canon applies a special coating, fluorite, which has an anomalous dispersion characteristic effectively reducing the aberration below what is possible with glass alone
UD and Hi-UD Glasses
In addition to fluorite, the use of ultra-low dispersion (UD) glass helps reduce the chromatic aberration that is a normal part of glass lenses. Additionally Hi-UD offers high refraction in addition to low dispersion to help combat spherical as well as chromatic aberration, including the aberration fluctuation normally caused by zooming
UPC: 013803248074

Canon Cine-Servo 17-120mm T2.95 Specs

Focal Length
17 to 120mm
Lens Mount
Canon EF
Lens Format Coverage
Super35/APS-C
Maximum Aperture
T2.95 to 3.9
Diagonal Angle of View
Super35: 87.2 to 14.1°
Minimum Focus Distance
From : 2.8' / 0.85 m
Diaphragm Blades
11
Gear MOD & Pitch
Focus: 0.8 MOD / 32 Pitch
Focus: 0.4 MOD / 64 Pitch
Zoom: 0.5 MOD / 51 Pitch
Front Diameter
114 mm
Zoom Ratio
7x
Image Stabilization
No
Dimensions (W x H)
6.9 x 4.9" / 175.3 x 124.5 mm
Length
10.4" / 263 mm
Weight
6.4 lb / 2.9 kg
Packaging Info
Package Weight
14.2 lb
Box Dimensions (LxWxH)
21.339 x 13.622 x 13.386"

Canon Cine-Servo 17-120mm T2.95 Reviews

See any errors on this page? Let us know

question

Will this lens work on an URSA Mini Pro in a studio configuration connected to the Black Magic ATEM 4K Production Switcher?
Asked by: John T.
If the URSA Mini Pro has a EF mount, this lens will work with the camera. If you wish to control the lens with the switcher, that is more complicated. Please email us so that we may better assist you in what you are planning to do. [email protected].
Answered by: Dennis A L.
Date published: 2018-08-25

How can I use this lens on a Panasonic EVA1 ...

How can I use this lens on a Panasonic EVA1 camera?
Asked by: Justin
The Canon CN7x17 KAS S Cine-Servo 17-120mm T2.95 (EF Mount) needs to be powered from the 12-pin Hirose cable when mounted to the Panasonic AU-EVA1 Compact 5.7K Super 35mm Cinema Camera. Consider using the IDX System Technology C-ZLPRO D-Tap to Hirose Cable for Canon CINE-SERVO Zoom Lenses (12.5") and the SWIT 65Wh/7.2V Panasonic VBR59 Battery with D-Tap and USB Type-C I/O together to power the battery and lens simultaneously. See the links below: https://bhpho.to/2qdi0eg https://bhpho.to/3IHX7PP
Answered by: Richard
Date published: 2023-03-03

does this lens require external power?

does this lens require external power?
Asked by: walter
Yes it does. We have the IDX System Technology C-ZLPRO D-Tap to Hirose Cable for Canon CINE-SERVO Zoom Lenses (12.5"), BH #IDCZLPRO, which you would need to pair with a battery that has a D-Tap power port.
Answered by: Joseph
Date published: 2019-11-06

When used with the Blackmagic Design Studio ...

When used with the Blackmagic Design Studio Camera 6K Pro (EF Mount) will it still need external power? How is the zoom range?
Asked by: Cristian
Yes, the Canon CN7x17 KAS S Cine-Servo 17-120mm T2.95 (EF Mount) will require external power when used with the Blackmagic Design Studio Camera 6K Pro. The 17-120mm zoom range is a very flexible and broad zoom range for a servo lens, especially for Super 35 sized sensors.
Answered by: Anonymous
Date published: 2024-04-15

Good lens for the EVA 1?? Will EVA 1 power it??

Good lens for the EVA 1?? Will EVA 1 power it??
Asked by: Toby
The EVA1 has an EF mount, this lens would pair very well with that camera. However you will need to supply the lens with power. IDX System Technology offers the C-ZLPRO D-Tap to Hirose Cable for Canon CINE-SERVO Zoom Lenses (12.5"), B&H # IDCZLPRO, to power the lens from a battery with a D-Tap Accessory Port. https://bhpho.to/2yJuuNC
Answered by: Joseph
Date published: 2019-03-01

How compatible is this lens with the URSA mini ...

How compatible is this lens with the URSA mini pro?
Asked by: Dale Ryan
As long as it is one of the Ursa Mini models with an EF mount, then this lens is fully compatible with the camera.
Answered by: Bruno
Date published: 2021-06-10

Will the record start/stop button function via ...

Will the record start/stop button function via the canon EF mount if the hand unit is powered by D-tap and does the Canon C100 MK2 EF mount communicate with this lens?
Asked by: John
Unfortunately it will not. For that you would need a camera with a 12 Pin Control Cable, such as the Canon C700.
Answered by: Joseph
Date published: 2019-11-11

If Auto focus is available when using this lense ...

If Auto focus is available when using this lense on C300 Mark III, does it breathe a lot?
Asked by: Anonymous
Yes, autofocus is available! According to the Canon C300 mkIII instruction manual the camera supports all focus modes with this lens, including continuous AF, face AF, and tracking. The Canon C100 and C300 mkII and original C300 with DPAF upgrade also support autofocus with this lens thanks to a firmware update released in December 2016. Note that the lens firmware may also need to be upgraded to support autofocus if you have older firmware. The lens is parfocal, and minimizes breathing.
Answered by: Tony
Date published: 2023-04-10
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