I've found the key to getting accurate skin tones on the A7s to be ALWAYS do a good manual white balance, and using the right picture profile. Like you, I do corporate work where you can't get away with arty skin tones. When required you need a straightforward look that just looks right and doesn't draw attention to itself. I tried S-Log and I'm still finding my way into it, but I'd recommend Kholi's picture profiles from another message board. I won't link to it here as I'm not sure if that's against the rules, but you can find it easy enough with a google search or drop me a message and I'll point you in the right direction. This profile really gave me colour which matches almost exactly with my 5D mk2. It's from a guy called Spreeni who slightly modified one of Kholi's profiles. It's a cine2 profile which is relatively flat but perks right up with minor colour correction and is much easier than S-Log 2 to deal with. Try this out before you drop your A7s altogether. And remember to do that white balance! I recently got an Expodisc 2 and it's really helped a lot. Black Level: -11 Gamma : Cine2 Black Gamma > Range: Wide , Level: +7 Knee > Mode: Manual , Auto Set > Max Point: 95 , Sensitivity: Mid, Manual Set > Point: 105%, Slope: 0 Colore Mode: Pro Saturation: +6 Color Phase 0 Color Depth > R+3, G-3, B+1,, C-3, M-1, Y-0 Detail > Level, -5 Adjust > Mode; Manual, V/H Balance: -2, B/W Balance Type3, Limit: 0, Crispening:0, hi_light Detail: 0 White balance: No Grid setting needed !
