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Description
Canon CJ25ex7.6B IASE-S 2/3" 25X UHDxs 4K Digital ENG/EFP Telephoto Lens
Reach new standards in optical clarity with a 2/3-in 4K zoom lens designed for high definition broadcasting
FEATURES
7.6 to 190mm Lens for 2/3" Cameras
2x Extender, UHD 4K & HDR Support
25x Zoom Ratio, Compact & Lightweight
Digital Servo Drive Generation 4
3 x 20-Pin Connectors, Onboard Display
Shuttle Shot, Frame & Speed Presets
Zoom, Focus & Virtual Output Control
Reduced Ghosting & Chromatic Abberation
4K Optical Performance
High-index optical glass materials, each having unique dispersion characteristics, help minimize chromatic aberrations and geometric distortion. Lens element surface accuracy has been improved significantly over HDTV lenses, contributing to the enhanced Modulation Transfer Function (MTF) performance required of 4K imagery. New multilayer optical coatings combined with new deposition processes produce a deeper black reproduction that is important to HDR imaging.
Built-In 2x Extender
4K optical performance is maintained when the 2x extender is deployed.
25x Optical Zoom Lens
The CJ25ex7.6B is the first UHD 4K broadcast lens in its class with a 25x optical zoom (190mm) on the telephoto end (380mm with the built-in 2x extender). Combined with a 7.6mm wide setting, the CJ25ex7.6B is ideal for a wide range of UHD 4K outside broadcast television productions, including live sports, nature, concerts, and other live events.
Compact and Lightweight
Weighing only 4.4 lb, the portable CJ25ex7.6B UHD 4K broadcast lens delivers the optical performance to support 4K cameras in a compact, lightweight body with the durability of a conventional HD lens. Designed to satisfy professionals with its high-level combination of excellent specifications, enhanced optical performance, and outstanding usability, the lens is ideal for on-the-shoulder shooting and interviews and offers the high mobility demanded of cameras in the reporting and documentary fields.
Ergonomic Design
The ergonomically designed grip offers an excellent feel during operation and was designed to fit comfortably in the hand, easing the strain on camera operators shooting for long hours on the shoulder.
BT.2020 and HRD/WCG Support
The portable CJ25ex7.6B UHD 4K broadcast lens features correction data that supports BT.2020, which offers a wider color gamut than the conventional BT.709 broadcasting standard. This enables excellent color reproduction to the corners of the screen when attached to a 4K camera, producing images that support High Dynamic Range (HDR) and Wide Color Gamut (WCG). The CJ25ex7.6B also provides optimized chromatic aberration correction based on BT.2020 correction data, enabling more lifelike high-resolution images with outstanding tonality, realistic texture, and depth.
HDR Image Capture
HDR images offer excellent gradation representation and enhanced realism and dimension, including texture for image representation close to the real thing. However, there can be noticeable color bleeding and flare, so HDR shooting requires high optical performance. The CJ25ex7.6B UHD 4K broadcast lens delivers the advanced optical performance that Canon considers essential for a UHD/HDR system lens, enabling the shooting of more realistic images.
Advanced Digital Drive Unit
The portable CJ25ex7.6B UHD 4K broadcast lens incorporates a digital drive unit, and the high-performance 16-bit encoder supports communication with compatible 2/3" HDTV/UHDTV cameras equipped with aberration correction functionality without initializing the lens. Three 20-pin connectors enable high-definition lens output for virtual systems even during full-servo operation. In addition, the low power consumption and the simple display enhance operability.
Improved Startup and Mobility
The drive unit of the CJ25ex7.6B can output accurate lens position data from the moment the power is turned on and does not require initialization, contributing to the quick start when shooting. This is possible thanks to the drive unit's 16-bit absolute value encoder. Eliminating initialization of the encoder at power-on simplifies calibration when composing virtual and live-action images and helps create more accurate composites.
Digital Correction for Lens Aberrations
Aberration correction functions have increasingly been employed on 2/3" HDTV/UHDTV cameras for broadcast use. The associated data files are immediately transferred to the camera, which implements digital correction for the lens aberrations. The lens also delivers digital positional data for external virtual systems.
Onboard Display
Various digital features can be set, adjusted, and operated from the display on the drive unit.
Support for Virtual Systems
The drive unit of the CJ25ex7.6B UHD 4K broadcast lens uses three 20-pin connectors. One of these connectors outputs 16-bit high precision lens positional data, allowing for output even while the zoom and focus servo controllers are in use. This high-performance encoder helps simplify calibration when composing virtual and live-action images, thus resulting in more accurate composites.
Shuttle Shot
By memorizing any two focal lengths, the Canon drive unit can automatically "shuttle" between two points, moving in either direction. As an example, this function is effective for shots in which an operator wants to start from a wide angle and then zoom in rapidly onto an object.
Frame Preset
An angle of view can be preset in either of two memories, and the lens will zoom at the highest speed, or in a preset zoom speed, to the preset position with the push of a simple button. As an example, this function can be effective for situations such as interview programs, where it is necessary to switch between bust and wide shot.
Speed Preset
A specific zoom speed can be preset in memory, making it possible to repeat the zoom speed as often as you like with the push of a simple button. Using a preset speed when zooming in and out contributes to stable images, particularly with slow zooms.
