User Manual

10. 4:4:4 Coded RGB 2K / HD video components – provides the maximum color space to
support sophisticated color grading as well as Bluescreen and Greenscreen compositing
for special effects
11. High Bit Depth – up to 12-bit RGB for 2K / HD origination effectively eliminates digital
quantization artifacts and noise, while ensuring faithful reproduction of the wide dynamic
range and wide color gamut to support extensive color grading in postproduction. Bit
depth, though not strictly related to color space, is a key determinant of the fidelity of
reproduction of the image color palette
12. No Compression – the digital video processing entails no compression whatever. That
comes later in the high-end XF-AVC codec used for on-board recording. Mapping from
the original 14-bit depth to a 12 or 10-bit output using the mathematically prescribed
Canon Log2 is the method used to achieve the necessary bit rate reduction that can
deliver the various camera output formats via a standardized 3G SDI serial interface.
The Canon supplied mathematics for Canon Log2 ensures the ability to faithfully restore
a high bit-depth linear light representation of the image sensor output in the downstream
postproduction processes.
13. RAW 4K Output – the uncompressed 4K / UHD RAW output can be delivered to an
external recorder (or to a video village) via the SMPTE ST 425-1:2011 3G SDI interface
14. 2K / HD Component Video Output – the various uncompressed 2K / HD digital video
formats (at 12 or 10-bit) can also be delivered via the same 3G SDI interface.
13.0 Summary
All of the imaging attributes that collectively earned the unique reputation for picture quality of
the EOS C300 digital motion imaging camera remain as the underpinnings for the design of the
second generation EOS C300 Mark II. But a further three years of ongoing R&D were able to
see development of a new Super 35mm image sensor with significant enhancements – most
especially in achieving a 15-stop dynamic range that makes this camera a serious source of
HDR imagery.
More powerful video processing – notably the deployment of sample rate conversion (termed
Oversampling HD Processing) – contributes to the production of superb 2K / HD RGB 4:4:4
video component quality as well as the alternative 2K / HD YCrCb 4:2:2 component set. In
addition, the C300 Mark II offers an important bridge into the emerging world of 4K / UHD
production.
A companion paper [6] describes the powerful on-board recording system that faithfully captures
all of that image quality. A third white paper [7] outlines the many ergonomic and operational
enhancements to the C300 Mark II – most of which were based on suggestions and
recommendations from many end-users of the first generation Cinema EOS camcorders.
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