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Canon EOS C300 Mark III Review

Produce videos that are worthy of being shown in theaters using the Canon EOS C300 Mark III Digital Cinema Camera. This camera has a Super 35mm Dual Gain Output sensor and the ability to record high dynamic range content with up to 16 stops of latitude, making it an excellent HDR camera with a low noise level.

The EF lens mount allows for compatibility not only with Canon’s already extensive lineup of DSLR lenses but also with the company’s line of cinema prime and zoom lenses designed specifically for the EF mount, as well as both 2.0 and 1.33 anamorphic lenses. The end user can also utilize a PL mount that is sold separately with this mount, making this mount interchangeable.

The sensor is matched with the Canon DiGIC DV7 image processor, which takes the raw information that is provided by the sensor and processes it for use in a variety of applications. These applications include high frame rate recording, raw recording, HDR-PQ output, electronic image stabilization (EIS), and proxy recording.

In addition to being able to record video at a resolution of up to DCI 4K on dual CFexpress cards, the camera also has an SD card slot for recording additional still photos. It is possible to record high frame rates in 4K raws at up to 120 fps, and in 2K cropped mode, you can record at up to 180 fps.

Both the Cinema RAW Light and XF-AVC recording formats from Canon are supported. This allows for the production of DCI 4K images using a 10-bit, 4:2:2 Long GOP codec. In addition, proxy recording is available, which enables you to significantly increase the speed of your post-production work.

The camera also features Canon’s Log 2 and Log 3 gamma settings, which provide greater versatility during post-production. These modes produce outstanding tone reproduction in the highlight and low-light parts of an image, as well as an enlarged dynamic range.

In addition, the Canon C300 Mark III supports user-created LUTs, which may be applied to monitors, the LCD, or the viewfinder in order to achieve the most accurate color reproduction. In addition to being able to provide accurate focusing, the Dual Pixel CMOS AF (autofocus) support that Canon provides also includes touch AF and facial detection capabilities.

In addition to timecode I/O and genlock input BNCs, the camera has the capability to output up to 12G-SDI over a single BNC cable. Using the inbuilt mic, mini-mic input, and XLR ports, it is capable of supporting up to four channels of audio; additionally, an extension unit may be added to handle up to four channels of audio through XLR inputs.

The body has a detachable design that allows it to be totally disassembled or reassembled using the handle, a 4.3-inch rotating touchscreen LCD unit with full controls, grip, and thumb rest that are all included in the package.

Dual Gain Output (DGO) Sensor for Canon Super 35 Cameras

The EOS C300 Mark III incorporates Canon’s Super 35mm Dual Gain Output (DGO) Sensor, which is the next generation of this sensor. This new sensor is compatible with Canon’s exclusive Dual Pixel CMOS Autofocus technology and has the ability to produce dynamic ranges that are greater than 16 stops in each direction.

By reading out each pixel with a distinct gain, the recently invented imaging technology known as the DGO Sensor is able to provide a high dynamic range while maintaining low levels of noise. It merges images using pixels that were captured with a saturation-prioritizing amplifier for bright areas and a noise-prioritizing amplifier for darker parts. The former is used for the bright areas, and the latter is used for the darker sections.

Image Processor for the DIG!C DV7

The Canon DIG!C DV7 image processor is included in the EOS C300 Mark III. This processor takes the vast amount of raw information that is recorded by the imaging sensor and processes it so that it can be output.

DiG!C is also the engine that powers feature such as high frame rate recording, the Dual Gain Output (DGO) Sensor, Dual Pixel Autofocus, Cinema Raw Light Recording, HDR (PQ) output, Electronic Image Stabilization, and proxy recording, amongst others.

Autofocus with Dual Pixels of CMOS, Touch AF, and Facial Contour Detection

Dual Pixel CMOS AF Technology is incorporated into Canon’s Cinema EOS C300 Mark III camera. In order to facilitate DAF, the CMOS sensor of the camera is outfitted with two photodiodes in each pixel. When using lenses that are compatible, it is thus possible to detect two independent image signals at each photosite, compare them utilizing phase difference, and give autofocus functionality.

DAF is able to analyze the scene and determines not only whether or not the topic is in focus, but also in what distance range (near or distant) and by what percentage it is out of focus. Users who want to focus manually but still take pleasure in the positive feedback provided by DAF through the guide interface can take use of the intuitive Focus Guide that is powered by DAF.

High Frame Rate; 4K at 120p and 2K at CROP at 180p respectively

The brand-new chip design and DiG!C DV7 processor included in the EOS C300 Mark III make it possible for the camera to achieve extremely high frame rates. In 4K, it is possible to achieve frame rates of up to 120 fps, while the 2K CROP mode offers even more flexibility by allowing for speeds of up to 180 fps.

Canon’s Log 2 and 3 Gammas, respectively

The Canon Log 2 and Canon Log 3 gamma systems are both compatible with the EOS C300 Mark III. In the post-production phase, Canon Log is intended to faithfully represent the full tone range that the CMOS image sensor is able to capture. Log operations give the user access to a wider dynamic range, greater highlight and shadow retention, and more grading versatility.

The dynamic range and level of detail in images can be increased to their maximum with Canon Log 2. Although Canon Log 2 allows for the greatest amount of post-production freedom and utilizes the full dynamic range of the sensor, it often takes significantly more time to fix colors.

Canon Log 3 offers an alternative for consumers who are searching for the majority of the benefits that come with using a Log workflow but with shorter turnaround times. This alternative has only a slightly lower dynamic range of 14 stops.

Modular Design

The EOS C300 Mark III’s new modular design makes it possible for productions to optimize and personalize the camera to meet their unique shooting requirements. It is simple to attach accessories and expansion units, which allows for a variety of degrees of capability to be provided. Both when it is fully outfitted with a huge zoom lens, FIZ unit, audio accessories, and rangefinder and when it is stripped down and flown on a drone, the camera is at home in both configurations.

Recording in XF-AVC and Using Canon’s Cinema RAW Light

The EOS C300 Mark III is equipped with a sophisticated DIG!C DV7 image processing platform, which enables it to record Cinema RAW Light directly to two CFexpress cards that are already installed in the camera.

Cinema RAW Light maintains file sizes that are approximately one-third to one-fifth the size of Canon Cinema RAW while offering a dynamic range that can exceed 16 stops thanks to a technology known as Dual Gain Output (DGO). Additionally, Cinema RAW Light provides a great deal of creative leeway for color grading. The Canon Cinema RAW Light codec provides an excellent balance of coding effectiveness and video quality.

A 4:2:2 10-bit Long GOP-based codec has been added to the standard Intra-based XF-AVC codecs. This was done with the goal of striking a compromise between the quality of the video and the amount of data it can store. This newly developed codec, which is based on Long GOP, has a data rate that is significantly lower than that of the traditional Intra codecs. Users are able to cut their media spending and more easily collaborate with cloud-based infrastructures thanks to a newly developed lightweight codec.

The new Canon XF-AVC codec is built into the EOS C300 Mark III Digital Cinema Camera. This codec enables 4K and 2K image data to be recorded internally onto CFexpress cards in workflow-efficient file sizes using advanced video compression. Additionally, this codec allows for the recording of image data at resolutions of up to 2K. The Canon EOS C300 Mark III can record in a variety of frame rates using the XF-AVC codec, including up to 4K at 120 frames per second and 2K at up to 180 frames per second.

LCD Touchscreen Monitor with a 4.3-Inch Display on the LM-V2

The LM-V2 4.3″ LCD Monitor is a touch screen that features roughly 2.76 million dots and has an easy-to-view design. The monitor can be attached to the EOS C300 Mark III quickly and easily using the accessories that are included, and it can be positioned in a variety of ways for optimal viewing.

The LCD monitor has the capability of displaying image framing in addition to providing visual confirmation of the camera settings. In addition, the display comes equipped with a control interface, which makes it simple to access and adjust the settings of the camera.

4-Channel Audio Recording

The Canon EOS C300 Mark III is capable of recording audio in up to four channels. The camera’s internal microphone, its tiny mic port, and its XLR ports are all potential sources of audio input that can be routed to one of the four available audio channels. The Expansion Unit EU-V2 provides support for a total of four XLR ports, bringing the total number to two. Because of this versatility, a broad variety of audio devices can be directly linked to the camera and blended on the device itself.

Support for Custom User LUTs

On the EOS C300 Mark III, users are able to upload and utilize user-created LUTs. It is possible to assign LUTs to particular output terminals, as well as the LCD and viewfinder. Different production roles have the opportunity to tailor the appearance of the image to meet their requirements. This is made possible by the fact that clients can watch one LUT while production works from another.

Lens Mounts That Can Be Swapped Out By Users

Lens mounts that are user-interchangeable and an available adapter for the B4 mount provide operators the opportunity to make bold creative decisions depending on the subject matter of their photographs. The Canon EOS C300 Mark III arrives with an EF mount, however, this may be easily changed by the user to either a Locking EF (EF-C) or PL mount using one of the available adapters.

Simply removing four M3 hex screws from each mount makes it simple to switch between them. Each mount kit comes with a shim set that may be used to change the rear focus. This allows for the kind of pinpoint accuracy in focusing that is essential for experts.

Support for an Anamorphic Lens

Cinematographers have the option of using either a 2.0 or 1.33 anamorphic lens with the EOS C300 Mark III thanks to the camera’s compatibility with both. It is possible for users to get the wide, cinematic looks, oval bokeh, and stunning flares that are characteristic of anamorphic glass. You may easily get a look that is particularly cinematic using this color scheme for your upcoming project.

Recording Done Through Proxy

While having a higher resolution, greater bit depths, and quicker frame rate all provide more adaptability and higher image quality, the file sizes created by these settings are significantly larger. By offering an alternative that requires less bandwidth for the first file sharing and preliminary cutting, proxy files have the potential to significantly accelerate the editing process.

The EOS C300 Mark III is equipped with Canon’s powerful and high-speed DIGIC DV7 image processor, which makes it possible for the camera to record 2K Proxy files simultaneously. Cinema RAW Light can be recorded to the internal CFexpress card, and an XF-AVC 2K 4:2:0 8-bit proxy can be recorded directly to an internal SD card. Both of these recording options are available. LUTs can also be applied to proxy recordings with the Canon C300 Mark III.

Stabilization of the Image Electronically

Built within the EOS C300 Mark III is the same five-axis electronic IS that was first introduced with the EOS C500 Mark II. This IS system is compatible with virtually every lens, including anamorphic lenses.

12G-SDI Support

The EOS C300 Mark III is able to output 4K resolution at up to 60 frames per second via a single BNC cable thanks to its support for 12G-SDI.

Support for the RC-V100 and compatibility with LANC

The body of the EOS C300 Mark III features a remote A terminal (LANC), and it is compatible with remote B (RS-422) in both the expansion unit EU-V1 and the expansion unit EU-V2. The EOS C300 Mark III can be totally remote-operated using these connectors by making use of either a standard cable that is compatible with LANC or a serial connection, depending on the distance between the operator and the camera.

Canon EOS C300 Mark III Specifications

Imaging

Lens MountCanon EF
Lens CommunicationYes, with Autofocus Support
Sensor ResolutionActual: 9.6 Megapixel (4206 x 2280)
Effective: 8.85 Megapixel (4096 x 2160)
Sensor Type26.2 x 13.8 mm (Super35) CMOS
Pixel Pitch6.4 µm
Image StabilizationNone
Built-In ND FilterMechanical Filter Wheel with 2 Stop (1/4), 4 Stop (1/16), 6 Stop (1/64), 8 Stop (1/256), 10 Stop (1/1024) ND Filters
Internal Filter HolderNo
Capture TypeStills & Video

Exposure Control

Shutter TypeElectronic Rolling Shutter
Shutter Speed1/2000 to 1/12 Second
ISO Sensitivity100 to 102,400
Gain-6 to 54 dB (Native)
-2 to 54 dB (Expanded)
Shutter Angle11.25 to 360°
Advertised Dynamic Range16 Stops
White Balance2000 to 15,000K
Presets: Custom 1, Custom 2, Daylight, Tungsten
Internal Recording ModesCinema RAW Light 10-Bit
4096 x 2160 at 24.00/25/29.97/50/59.94 fps [250 to 1000 Mb/s]
2048 x 1080 at 12/15/20/23.98/24.00/25/29.97/50/59.94 fps [250 to 1000 Mb/s]
1920 x 1080 at 12/15/20/23.98/24.00/25/29.97/50/59.94 fps [250 to 1000 Mb/s]
XF-AVC
DCI 4K (4096 x 2160) at 23.98/24.00/25/29.97/50/59.94 fps
UHD 4K (3840 x 2160) at 23.98/24.00/25/29.97/50/59.94 fps
DCI 2K (2048 x 1080) at 23.98/24.00/25/50/50/59.94 fps
1920 x 1080p at 23.98/25/29.97/50/59.94 fps
1920 x 1080i at 50/59.94 fps
1280 x 720 at 50/59.94 fps
External Recording ModesHDMI
DCI 4K (4096 x 2160)
UHD 4K (3840 x 2160)
1920 x 1080p
1280 x 720
Sensor Crop ModesSuper16
2K (2048 x 1080)
Variable Frame RatesDCI 4K: 12 to 179.82 fps
UHD: 12 to 179.82 fps
DCI 2K: 12 to 179.82 fps
1080p: 12 to 179.82 fps
Gamma CurveCanon Log 2, Canon Log 3, HDR-HLG, HDR-PQ, Rec709, Wide DR
Recording LimitUnlimited
Built-In Microphone TypeMono
Audio Recording4-Channel 24-Bit 48 kHz LPCM Audio

Still Image Capture

Image File FormatJPEG

Interface

Media/Memory Card SlotDual Slot: CFexpress Type B (CFexpress 2.0)
Single Slot: SD/SDHC/SDXC
Video I/O1 x BNC (12G-SDI) Output
1 x BNC Output
1 x HDMI Output
Audio I/O2 x XLR 3-Pin Microphone (+48 V Phantom Power) Input
1 x 1/8″ / 3.5 mm TRS Stereo Microphone Input
1 x 1/8″ / 3.5 mm TRS Stereo Headphone Output
Power I/O1 x XLR 4-Pin (24 VDC at 2 A) Input
Other I/O1 x BNC (Timecode) Input/Output
1 x 2.5 mm Sub-Mini (LANC) Control Input
WirelessNone
Global Positioning (GPS, GLONASS, etc.)None

Monitor

Size4.3″
Resolution2,760,000 Dot
Display TypeArticulating Touchscreen LCD

Viewfinder

TypeOptional, Not Included

Focus

Focus TypeAuto and Manual Focus
Focus ModeAutomatic, Continuous-Servo AF, Manual Focus

General

Battery TypeCanon BP-A Series
Power Consumption>34 W
Accessory Mount1 x 1/4″-20 Female
1 x Cold Shoe Mount
Dimensions (W x H x D)6 x 5.8 x 6.6″ / 153 x 148 x 168 mm (Without Grip)
7.2 x 5.8 x 7.4″ / 183 x 148 x 189 mm (With Grip)
Weight3.86 lb / 1.75 kg (Body Only)
5.38 lb / 2.44 kg (With Grip, Handle, Monitor)

Packaging Info

Package Weight14.2 lb
Box Dimensions (LxWxH)18.5 x 14.5 x 12.6″

Canon EOS C300 Mark III Price

Pros & Cons

Good For
  • Supports Canon lens system.
  • Modular design.
  • A sharp external monitor and EVF are included.
  • Superior video quality even at high ISO settings.
Need Improvements
  • The maximum quality for the video is 1080p/30.
  • Expensive.
  • AF system suffers in weak light.
  • The image sensor is not a full-frame.

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