Brightland Studios placed the Canon C300 Mark II and Sony A7S II cameras side by side for a colour and autofocus test and comparison.
C300 II: Gamma: Canon Log, Color Space: DCI-P3, Color Matrix: EOS Standard, 4K 410Mbps XF-AVC (ALL-I 422 10-bit H.264).
A7S II: Gamma: Slog2, Color Mode: SGamut3.cine, +16 Saturation, -7 Sharpness. 4K 100Mbps XAVC-S (IPB 420 8-bit H.264).
White balance set to 5500K/Daylight.
Lights: 2 Aputure Lightstorm LS1 (~95 CRI), 1 Aputure LS1/2 (~98 CRI).
Canon C300 Mark II with Canon 24-70 F2.8 II at 70mm F2.8, ISO 250.
Sony A7S II with Sony 24-240 at ~105mm F5, ISO 1600.
Edited in Premiere Pro CC 2015- about 2 minutes in the Lumetri panel for each clip (no LUTs). The goal was quick turnaround.
These cameras can match pretty well, perhaps a bit better with custom setting tweaks and a little more work in post. As expected, the C300 II has better detail, color, and AF, though the A7S can easily be used as a B-cam and looks pretty good too.
For more: https://www.brightland.com