![]() LUT 1) Neutral - A neutral ARRI look - no colour cast or 'look' - just the classic ALEXA Rec709 look. I’m really happy with the emulation and hope you enjoy it too!ġ) An organic, smooth and gentle highlight roll-off that mimics Alexa in it's highlight rendering to give an overall organic and naturalistic feel to the footage.Ģ) Natural skin tones designed to render contrast levels on skin like an ARRI Alexa.ģ) Naturalistic, organic and classic colours.Ĥ) Rich but not crushed shadows so that these LUTs can be used in low light scenes as well as broad daylight.ĥ) Commensurate exposure levels with the input footage that don't shrink the dynamic range of the camera (by blowing out the highlights and crushing the shadows) or radically change the exposure value or luminance of the originating image. 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. With each set up I recorded 3 exposures - under 2 stops over 2 stops and correct exposure. In total I shot approximately 80 scenes this way. 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. 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. 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. 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. A lot of Canon users have emailed me describing their dissatisfaction with the colours coming out of their camera.
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