Phantom LUTs for Canon Cinema Cameras

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A lot of Canon users have emailed me describing their dissatisfaction with the colours coming out of their camera. Having recently purchased a C70 myself I decided to develop a LUT to emulate my Alexa mini using the tried and true process I developed with Sony and Blackmagic cameras. While no camera is perfect, personally I find the Alexa’s colour science to be the gold standard in terms natural, accurate and beautiful colours right out of the box as a starting point to grade from.

Over the course of a few days, I shot exposure matched test footage with my Alexa mini and a C300 mk3 side by side with matched Sigma Art lenses. I shot in sunlight, shadow, overcast, indoor daylight, indoor mixed lighting, controlled studio lighting and all with my trusty Xrite Colour Checker Classic Card and my Xrite Digital Color Checker SG Card.

In total I shot approximately 80 scenes this way. With each set up I recorded 3 exposures - under 2 stops over 2 stops and correct exposure. With the extensive data gathered, I was able to build an emulation that is extremely accurate; factoring in not just the overall colour response but also the more subtle aspects of the Alexa colour science that it borrowed from photochemical film such as it’s non linear hue responses for rich, complex colours, subtractive colour modeling in relation to luminance vs saturation dynamics and the Alexa’s overall saturation profile for beautiful highlight rolloff and shadow falloff to name a few.