Canon 4K UHDxs CJ20e 7.8B Zoom Lens

This feature allows for compatibility with a broadcast-use HD demand. It enables the use of the zoom and focus electrical drive system accessories (such as the ZSC-300D and FPD-400D) which are currently used by HD equipment.

Drive Unit

The portable CJ20ex7.8B 4K UHD lens incorporates a digital drive unit, and the high-performance 16-bit encoder supports communication with compatible 2/3″ HDTV cameras equipped with aberration correction functionality, without initializing the lens. Three 20-pin connectors enable high-definition lens metadata output for virtual systems even during full-servo operation. In addition, the low power consumption and a simple display mode (Basic Mode) enhance operability.

Improved Startup and Mobility
The drive unit of the CJ20ex7.8B 4K UHD lens 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 to create more accurate composites.

Aberration Correction and Virtual Functions Enabled without Lens Initialization
Aberration correction functions have often been employed on 2/3″ HDTV cameras for broadcast use. The drive unit of the CJ20ex7.8B 4K UHD lens 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.

Advanced Virtual Operability and Precise Virtual Image Expression
The drive unit of the CJ20ex7.8B 4K UHD 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.

Simple Display Operations
Canon’s unique display-based functions help a variety of operations. We have listened to our customers, and a simplified mode (Basic Mode) makes for easier operation.

Digital Functions 

The Canon drive unit integrates a variety of operations, stored digitally, that can be manipulated using the display.

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 on to 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 pre-set 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 shot 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 zooming out contributes to help create stable images, particularly with slow zooms.