Quick question so that I don't have to do a test. If I shoot S-Log out to an external recorder can I record straight non S-Log to the SxS card? I kow I can record a LUT to the SxS, but I never tried to record non S-Log to the SxS while recording S-Log out.

That is what the LUTs do is give you an approximation of what the image would have looked like if you were shooting in a non s-log mode.

Thanks,
I found the answer to my question. Which is NO, I can't record non S-Log, non LUT footage to my camera while recording S-Log to an external recording device. Kinda what I figured.

If you use the 709 (180) Lut then the SxS recordings will be the same as if you used the Rec-709 gamma curve with a fixed knee at approx 87%. Pretty close to the cameras standard factory default settings. Slightly under saturated though.

Greg I also answered your question posted on another forum, and there too I said that you could use REC709 LUT which would give you a "non-slog" version that can be recorded.

So the answer is "yes".

But for example you can't record "cinegamma 2" to SXS card while recording SLOG out.

Hope this helps,