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Canon C300 Mark III with 4K/120fps RAW Announced

C500 mark II body with a new Super 35 sensor and 4K/120fps Cinema RAW Light!

Canon c300 Mark III mk3 camera ef lens mount

Canon announces the Canon C300 Mark III addition to their Cinema EOS camera range. Major features include a new 4K Super 35mm sensor, Dual Gain Output, and 4K/120fps in Cinema RAW Light and XF-AVC internally.

Also, the C300 Mark II successor shares the same body design with the Canon C500 Mark II. In addition, the camera features a modular design, Dual Pixel CMOS AF and dual CFExpress card slots.

16+ Stops Dynamic Range, New Super 35 Sensor

The new Cinema EOS camera is equipped with the latest DIGIC DV7 image processor ported from the full-frame C500 Mark II. In addition, the new C300 Mark III boasts expanded dynamic range with 16+ stops of latitude, thanks to its DGO (Dual Gain Output) sensor.

Canon say the new C300 Mark III is capable of impressive low-light video recordings with very low noise, with a maximum ISO 102,400.

Canon C300 Mark III mk3 CNx25 EVF
C300 Mark III with Canon CN10x25

Canon C300 Mark III Features

  • New Super 35 4K CMOS sensor with 16+ stops latitude
  • DIVIC DV7 image processor
  • DPAF (Dual Pixel AF)
  • Same body as C500 Mark II
  • Modular camera body design
  • Dual Gain Output 
  • Internal Canon RAW Light recording
  • XF-AVC 10bit 4:2:2 ALL-I and Long-GOP internal codecs
  • 4K/120fps in Canon RAW Light or XF-AVC
  • 2K (crop sensor) up to 150fps
  • ISO up to 102,400
  • Dual CFExpress card slots
  • Record proxies to SD card
  • In-Body Electronic Image Stabilization
  • Optional Extension Units for V-lock and more XLR I/O
  • Available in Canon EF mount
  • Optional PL mount (interchangeable mount)
  • B4 lens mount adapters compatible
  • Compatible with Canon C700/C500 Mark II EVF
  • Compatible with Canon C200 touchscreen monitor unit
  • 1,750 kg
  • Pre-order: Canon C300 mark III – $10,999 at B&H
EVF Canon C300 Mark III mk3 cine zoom
Canon C300 Mark III / Images by Canon

Dual Gain Output Sensor with Dual Pixel AF

The C300 Mark III features a Dual Gain Output (DGO) sensor is a newly-developed imaging system that generates HDR video by reading out each pixel with different gains.


Contrary to popular belief, this technology is not the same as Dual Native ISO according to Canon. Dual Gain Output works with any ISO, with the native ISO remaining ISO 800 in all resolutions. It is also compatible with Dual Pixel CMOS AF, which is very nice.

Furthermore, DGO combines images using pixels shot with a saturation-prioritising amplifier for bright areas, and a low noise-prioritising amplifier for darker areas, resulting in higher dynamic range. 

4K/120fps Cinema RAW Light and XF-AVC 10bit

The new C300 Mark III supports continuous 4K video recording up to 120fps, in both Cinema RAW Light and XF-AVC 10bit 4:2:2.

In addition, the camera also supports 2K (crop) mode, with frame rates from 12 fps up to 150 fps slow motion. Meanwhile, Canon has also given us a dedicated Slow & Fast shortcut button, for quick access to slo-mo.

Much like the C500 Mark II, the C300 Mark III also gets two CFExpress card slots. Moreover, these enable simultaneous internal recording of 4K Cinema RAW Light files (10/12-bit) or 4K XF-AVC files (4:2:2 10-bit).

XF-AVC supports ALL-I which delivers the best quality, and Long-GOP which enables longer recording times through higher compression. A Proxy can also be recorded onto an SD card, making editing work more efficient.

Monitor C200 Canon C300 Mk3 Mark III CN10x25 25-250mm
Cinema EOS C300 Mark III with CN10x25 Canon 25-250mm Cine Zoom

In-body Electronic Image Stabilization

The EOS C300 Mark III incorporates Electronic Image Stabilization (IS) into the camera body, supporting 5-axis camera shake correction. Even when used with lenses with no electronic lens communication, Electronic IS is possible by manually inputting the focal length.

The camera will be available in EF mount. This provides compatibility with a huge range of Canon EF zooms and primes. In addition, the optional PL mount supports the Cooke/i system. Additionally, B4 mount adapters are also available (for EF or PL mounts) to use with B4 lenses.

The C300 Mark III’s lens mount is interchangeable between EF and PL, much like the C500 Mark II. However, at this stage it is not clear as to whether this lens swap can be done by the end user.

Canon EU-V2 Expansion Unit C300 Mark III C500 mark II
Canon EU-V2

Optional Extension Units for V-mount and XLR

Thanks to its flexible modular design, the C300 Mark III is compatible with various Canon extension units familiar to C500 Mark II users.

Expansion Unit EU-V1 offers multi-camera support with a Genlock interface. While the more robust Expansion Unit 2 (model Canon EU-V2) adds further interfaces, such as two more XLR inputs. Furthermore, this is ideal for broadcast applications as the unit also adds a V-Lock battery mount.

Canon EOS C300 Mark III EU-V1 Expansion Genlock
EU-V1 Expansion with Genlock – C300 mark III

The C300 Mark II successor is also compatible with the optional C500 mark II EVF ($699 at B&H) is ideal for hand-held use, but also easily removable for gimbal use. The camera also supports the much more advanced OLED EVF-V70 from the C700, priced at $4,000 USD.

Pricing and Availability

The new camera tips the scales at just 1,750g (body only) making it perfect for hand-held rigs and gimbal applications.

The Canon EOS C300 Mark III is priced at $10,999 USD and you can pre-order it at B&H.


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