CANON CN7X17 KAS S CINE-SERVO 17-120MM T2.95 (PL MOUNT)

The Cine-Servo 17-120mm T2.95 with PL 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

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

Canon Cine-Servo 17-120mm T2.95 Specs
Focal Length 17 to 120mm
Lens Mount ARRI PL
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" / 255 mm
Weight 6.4 lb / 2.9 kg