Canon recently announced EOS C70, the newest addition to the Canon Cinema EOS System in Japan on 24th September 2020. This new EOS C70 utilises Canon’s RF lens mount, resulting in a compact and lightweight design (1), supporting 4K/120 high frame rate, enabling rich visual expression.

Canon EOS C70 – First Cinema EOS Camera with RF mount

The Canon EOS C70 is the first Cinema EOS System camera to be equipped with an RF mount, opening up a new era, opportunities and possibilities in cinematography and videography, making it compatible with any of the RF lenses from Canon’s EOS R System. Users can also equip themselves with the Mount Adapter EF-EOS R 0.71x (sold separately and more information below), the EOS C70 can also support the extensive lineup of lenses available from the Canon EF lenses family (2).

Featuring a 4K Super 35mm CMOS DGO (Dual Gain Output) sensor, the EOS C70 can capture high-image-quality 4K video in 4:2:2 (10-bit) color that delivers rich gradation, even in environments with significantly high contrast which demands high dynamic range. Moreover, the camera is equipped with the DIGIC DV7 image-processing platform capable of high-speed processing, enabling users to record high-frame rate 4K/120P video to UHS-II standard SD cards. 

The EOS C70 is equipped with two SD card slots and supports a variety of recording modes such as simultaneous recording, relay recording and 4K/2K recording. The camera also inherits many professional features found in the existing Cinema EOS lines, including two mini XLRs, audio control dials, Timecode IN/OUT ,full HDMI terminal and the newly designed “Direct Touch Control” function that allows users to change recording settings quickly and directly from the camera’s touchscreen panel. 

In addition, the camera also incorporates Canon’s proprietary Dual Pixel CMOS AF technology, which offers even greater performance with the addition of our Intelligent Tracking and Recognition System. This advanced algorithm developed under deep learning technology works in conjunction with our Face Detection AF and further improves focus tracking, even when a subject is looking away from the camera. Combined with our new highly responsive touch screen, image focusing is now faster and even more intuitive. 

Canon Mount Adapter EF-EOS R 0.71x

Along with the announcement of the Canon EOS C70, Canon also announced the launch of the Mount Adapter EF-EOS R 0.71x, a lens adapter for the EOS C70, the first RF mount camera model from the Cinema EOS System, this adapter would enable the camera to use EF series lenses.

Employing a miniaturized optical system, the Mount Adapter EF-EOS R 0.71x allows for video recording using the EOS C70 and EF series lenses with an angle of view close to that of the mounted full-frame lens. This allows users to take full advantage of the wide selection of EF series lenses as well as expands the possibilities and flexibility of video production. 

The optical system of the Mount Adapter EF-EOS R 0.71x reduces focal length by 0.71x, thus allowing the EOS C70—equipped with a Super-35mm DGO sensor—to record video using EF lenses (2) originally designed for full-frame sensors with an angle of view similar to the original angle of the full-frame lenses. In addition, reducing the size of the optical system gains approximately one extra stop (one lens aperture “f-number”) of brightness, thus requiring lower ISO sensitivity. This enables high-image-quality recording with less noise, even in low-light environments such as indoors or at night. 

When equipped with EF lenses (3) via the Mount Adapter EF-EOS R 0.71x, the EOS C70 digital cinema camera can achieve the same Dual Pixel CMOS AF autofocus functionality across the entire image, just like digital cinema cameras with an EF mount. In addition, the camera can also record and display data such as peripheral illumination correction, effectiveness of lateral chromatic aberration correction, F-number and focal length. 

Canon CJ20eX5B – Designed for 4K broadcast cameras

Together with the Canon EOS C70 and Mount Adapter EF-EOS R 0.71x announcements, Canon announced the launch of a new addition to its UHDxs series of portable zoom lenses for 4K broadcast cameras employing 2/3 inch sensors.

The CJ20eX5B offers a 20x zoom ratio with a focal length of 5 mm at the wide end while achieving superb 4K optical performance throughout the entire zoom range. Delivering high optical performance, the CJ20eX5B creates immersive and high-quality visual expression of content such as sports broadcasting and programming content filmed on-location. With the addition of this new lens for 4K broadcast cameras, Canon helps support a wide range of user needs. 

The CJ20eX5B features a wide-angle focal length of 5 mm—ideal for capturing expansive scenes including full stadium views—while also providing a 20x zoom ratio that accommodates a range of frequently used focal lengths up to 100 mm. On top of this, the lens is equipped with a built-in 2x extender that enables users to quickly double the focal length up to 200 mm while preserving fine visual details. 

While delivering 4K optical performance, the CJ20eX5B achieves a compact and lightweight design comparable to HD camera lenses, weighing only approximately 2.24 kg (4) and measuring approximately 166.3 mm (W) x 110.8 mm (H) x 251.7 mm (D). As such, the lens maintains the high levels of maneuverability required while reducing operation stress during production. 

The CJ20eX5B utilizes fluorite, UD and super UD lens (5) elements, all optimally arranged in a proprietary optical configuration. This allows for excellent suppression of chromatic aberrations such as color bleeding and fringing to achieve excellent image quality all the way to the peripheral areas of the image. 


(1) The EOS C70 measures approximately 160.0 mm (W) x 130.2 mm (H) x 115.9 mm (D) and weighs approximately  

(2) Includes CN-E (EF cinema) lenses. Excludes RF lenses, EF-M lenses, EF-S lenses and some manual focus lenses.  

(3) As of September 25, 2020, the following lenses are compatible: the EF16-35mm f/2.8L III USM (released in October 2016), the EF24-70mm f/2.8L II USM (released in September 2012), the EF24-105mm f/4L IS II USM (released in November 2016). Canon plans to gradually expand the list of compatible lenses by providing free-of-charge firmware updates. EF lenses are still compatible with the camera, but Canon recommends that firmware updates be installed in order to effectively utilize functions which link the camera and lens.  

(4) For the CJ20eX5B IASE S. The CJ20eX5B IRSE S weighs approximately 2.16 kg. The CJ20eX5B IASE S is equipped with a focus servo motor, while the CJ20eX5B IRSE S is not.  

(5) A lens element utilizing ultra-low dispersion (UD) glass. Super UD lenses realize further improvements in performance over UD lenses.  

* Information and pictures courtesy of Canon Singapore and Gloo PR *

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