Bransford MediaS-Log3 to Rec.709
Free Sony a7S III LUT (S-Log3 to Rec.709)
Turns the a7S III's S-Log3 / S-Gamut3.Cine footage into normal-looking Rec.709 video. One .cube LUT, free for any project, no email.
The zip holds the same LUT twice: a 65-point file for editing, and a 33-point file for monitoring on a camera or in an app, or for older apps that won't load the larger one.
Checked against Sony's own LUT and tested on our Sony FX30 footage.
S-Log3, as recorded
With the LUT
The LUT converts S-Log3 with S-Gamut3.Cine color, as the manufacturer publishes them, into Rec.709 through the ACES 2.0 output (SDR, 100 nits).
Built from: Sony, Technical Summary for S-Gamut3.Cine/S-Log3 and S-Gamut3/S-Log3.
Set up the a7S III
- Firmware Ver.4.00 or later: Log Shooting Setting > Log Shooting: On (Flexible ISO); PP7-PP9 presets and S-Log2/S-Gamut can no longer be used
- Before firmware 4.00: Picture Profile PP8 (S-Log3/S-Gamut3.Cine), PP9 (S-Log3/S-Gamut3), PP7 (S-Log2)
- Preset LUTs S-Log3 / s709 / 709(800%) and PPLUT1-4 user LUTs with firmware 4.00+
Exposure
Sony help guide (Picture Profile notes): S-Log noise is more noticeable than other gammas; it may be improved by shooting with a brighter setting, but dynamic range becomes narrower accordingly; Sony recommends test shooting first. No 18% grey target is published in the help guide.
Sources
- helpguide.sony.net
Log shooting usable with firmware Ver.4.00 or later
- helpguide.sony.net
Log Shooting: Off / On (Flexible ISO)
- helpguide.sony.net
PP7-PP9 and S-Log2/S-Gamut cannot be used with firmware 4.00+; PPLUT with 4.00+
- helpguide.sony.net
Original help guide: PP7 S-Log2, PP8 S-Log3/S-Gamut3.Cine, PP9 S-Log3/S-Gamut3
- alphauniverse.com
Sony announcement July 28, 2020; 15+ stops with S-Log3
- support.d-imaging.sony.co.jp
Official Sony S-Log grading guide; offers s709 3D LUT downloads (s709Cubes.zip: SL3SG3Ctos709.cube, SL3SG3tos709.cube) and P3 versions for S-Log3 with S-Gamut3.Cine or S-Gamut3. Page text names ILCE-1/ILCE-7SM3, but the LUTs are per profile (S-Log3). Zip download confirmed.
Recording a different profile?
- Download the S-Log3 / S-Gamut3 LUT
Checked against Sony's own LUT and tested on our Sony FX30 footage.
About S-Log3 / S-Gamut3 - Download the S-Log2 / S-Gamut LUT
Built from Sony's published spec; not yet tested on footage from this camera. If blacks look lifted or crushed, check the clip's data levels.
About S-Log2 / S-Gamut