Virgil Edward February 20, 2018 Share February 20, 2018 Hey guys, I don't know if this makes sense, but I've come up with a workflow that I think is plausible in matching A7S with Alexa footage. I used color space transform ofx to convert slog to to log-c and matched the color of the a7s with the log-c of the alexa footage then applied the same settings that I used on the Alexa to the a7s. What do you think about this? Link to comment Share on other sites
Amada Daro February 20, 2018 Share February 20, 2018 A7S will never look like the Alexa but start by balancing out both shots, and match the contrast. Converting from S-log to C-log will not set the Alexa signature on the footage when the starting point is so radically different. Link to comment Share on other sites
Jussi Rovanperä February 21, 2018 Share February 21, 2018 (edited) The colors are different, but with s-log -> log C transform, the tone curve will be similar (of course the quality of the files is different) Slog3 is quite similar to log C, while slog2 is very different. I always convert slog2 to cineon, log C, or some other well behaving log. Edited February 21, 2018 by Jussi Rovanperä 1 Link to comment Share on other sites
dermot.shane February 22, 2018 Share February 22, 2018 i use ACES so the IDT's are replaceing OFX transforms, i let the Sony be a Sony and Arri be an Arri, then tweak to match as needed 1 Link to comment Share on other sites
Dennis Schmitz June 26, 2018 Share June 26, 2018 On 2/22/2018 at 6:48 AM, dermot.shane said: i use ACES so the IDT's are replaceing OFX transforms, i let the Sony be a Sony and Arri be an Arri, then tweak to match as needed That's the better approach for sure. Since a lot of their own color science will be "replaced" using ACES. Good news for Sony prosumer cameras for sure. Link to comment Share on other sites
Anton Meleshkevich July 1, 2018 Share July 1, 2018 (edited) Alexa limits saturation in highlights. More saturated highlights become lighter, but not more saturated at some point. But I can be wrong. Try to google "Art Adams LC709A". You'll find a couple of articles about matching sony cams to alexa. Edited July 1, 2018 by Anton Meleshkevich Link to comment Share on other sites
dermot.shane July 2, 2018 Share July 2, 2018 suppose it goes back to one's prefrences to work in display refered, or scene refered... i prefer scene refered, and find matching these camera's to be pretty straight forward with the correct IDT's, no luts needed (or wanted really) in my choice of workflow in Resolve my default node tree has a node set to HSL, with Ch1/3 bypassed, so i have control of saturation on the rings for tweaks in regions most of the heavy lifting gets done in L*a*b nodes tho 2 Link to comment Share on other sites
