This package transforms RED material to closely emulate an ARRI Alexa’s gamma and colorspace – providing an alternative starting point for further grading.
The LUTs are based on an average of actual camera data. Additional grading may still be required to completely match the two cameras in a particular scene. Try out the Interactive Demo.
Built with precision and quality control, the LUTs have been thoroughly stress tested and do not introduce any unwanted banding or color artifacts.
The Log3G10 gamma curve is mathematically transformed to ARRI’s LogC format. Some highlight rolloff was added to avoid clipping luminance data. This serves as the base for all other colorspace conversions.
The color information is transformed from REDWideGamutRGB to a variety of ARRI formats using our Camera Profiling process. Since REDWideGamutRGB is a standardized colorspace, this LUT package works across all RED camera models.
All the LUTs implement a tone-mapping process to retain out-of-gamut colors.
Based on a traditional log workflow, grading should be applied after the TRUECOLOR LUT, but before the output Display LUT.
Also watch some of the recommended workflows using RED Cine-X and DaVinci Resolve:
The following video shows how our LUT compares to an actual ARRI Alexa under various lighting conditions. RED’s default IPP2 settings are also shown for reference (Medium Contrast & Medium Rolloff).
Our goal was to match each shot as closely as possible by only adjusting the White Balance, Tint, and Exposure settings. Better results could be obtained through the use of secondary color corrections.
More details about the camera settings are available in the PDF.
You can purchase the LUT package here: https://truecolor.us/downloads/red-to-alexa-lut-package
For any other inquiries about the LUT, please contact us.