Canon CJ20 – high-grade 4K optical performance

Equipment Rental

The Canon CJ20ex7.8B is a portable ENG zoom lens for HD and 4K broadcast cameras. It offers a 20x zoom ratio and focal length range from 7.8mm to 156mm, and is well suited to news and sport applications, as well as documentary and serial drama use. Its high resolution makes it a perfect partner for 4K camera bodies.

Careful lens positioning and precision assembly ensures quality 4K resolution right across the image, and the lens also includes a 2x extender, which even when at full zoom will give sufficient resolution for 4K. The compactness of the lens also makes it suitable for shoulder-mount camera work.

The lens’s 16-bit optical rotary encoders give responsive, precise and repeatable user operation, while fast start-up with multiple types of image compensation ‒ including lens and chromatic aberration – is supported. 

“The CJ20 guarantees broadcast-quality, high-resolution footage, with images that are just as sharp at the edge of the screen as they are at the centre”, says Steve Snook, Gravity Media’s UK Engineering Manager. “The 20x zoom ratio and focal range of 312mm with the extender make this lens an indispensable tool for all 4K broadcasts – especially live sport and other large-scale live events. As 4K becomes ever-more popular for top tier sport, we expect the already strong demand for these units to accelerate considerably. Now is definitely the time to upgrade your hardware to UHD.” 

To speak to one of the team about hiring the CJ20ex7.8B – or for any other help with your next production – email