“With the advent of dual gain technology, where a high and low ISO are combined in one exposure, things started to change.
We saw this technology early on in state of the art cinema cameras like the ARRI Alexa lineup, and they can be found on top of our “best of charts”. More recently this technology has arrived in consumer cameras as well, like the Canon C70, the LUMIX S1II and GH6 / 7 and now also in the Sony A7R IV [1] – accordingly, the gap between high end cinema cameras and consumer cameras became smaller.”
—Gunther Machu, DJI Osmo Pocket 4P Lab Test: Rolling Shutter, Dynamic Range and Exposure Latitude, CineD, July 30, 2026
Gunther Machu’s classification of the Canon C70 as a “consumer camera” is factually indefensible.
The Canon C70 is a dedicated professional digital cinema camera in Canon’s Cinema EOS lineup. It incorporates numerous features that distinguish it as a professional cinema camera, including:
- Dual Gain Output (DGO) sensor architecture, inherited from the Cinema EOS C300 Mark III.
- Built-in motorized ND filters.
- Dual 3-pin mini-XLR terminals with dedicated physical controls.
- Full-sized BNC timecode connectivity and physical audio switches.
- An isolated active cooling system for unlimited recording.
- Professional recording codecs, including XF-AVC and 12-bit Cinema RAW Light.
- Dual SD card slots for professional recording workflows.
- Shutter-angle.
By contrast, the Panasonic LUMIX S1II, GH6/GH7, and Sony A7R IV are hybrid stills/video cameras. Machu is conflating fundamentally different product categories.
Calling the Canon C70 a consumer camera isn’t just an innocent mistake. It’s a category error that calls into question whether the author even understands the distinction between a dedicated professional cinema camera and a hybrid stills/video camera.
- The Sony A7R IV does not use Dual Gain Output (DGO) or a dual-output gain architecture. It uses a dual native ISO implementation, which is a different technology.
The Daejeon Chronicles 
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