Nicolas Hanson January 3, 2018 Share January 3, 2018 Can someone explain the difference between the Color Space Transform OFX plugin and a Alexa LUT in these examples when the footage is Alexa. 1. LogC, target = Rec709. 2. Rec709, target = Alexa LogC. Is the color space transform less destructive, is it bases on a formula like theTruelight Video 1 inverse DRT? Why use the Alexa LUT at all to inverse back from log to Rec709? Link to comment Share on other sites
Orash Rahnema January 4, 2018 Share January 4, 2018 The main difference i would say is that the lut clip at 0 and 1, so Nothing below and above that Will bè recoverable After the lut. The color space transform is lossless. 1 Link to comment Share on other sites
Jussi Rovanperä January 4, 2018 Share January 4, 2018 The Arri log-c to 709 lut is designed to make your footage look nice, the OFX is just a technical transform from one gamma to another. The log-c to 709 OFX does not have highlight rolloff, and will push values over 1 easily, but can also be perfectly reversed with a 709 to log-c OFX... 1 Link to comment Share on other sites
Seth Tonk January 14, 2018 Share January 14, 2018 Juan Melara has an awesome tut/explainer here on how they can be used for Log footage... It shows the power of the transform OFX 1 1 Link to comment Share on other sites
