so I got a footage to key and roto. I have been told it's 444  so was pleased.

it was an mxf file, imported to Ae and saw it was stated as RAW. I saw the color and contrast was good and immediately got to work.

this is how it looked in Ae:

on 200% it looked a bit funky but I just ignored it (WRONG!) and carried on.

about 80% into the project it started to bug me so I asked the cameraman and indeed something was off. so he told me I should download RAW viewer and export from there. so imported the file to the software, and now I was faced to decide which input parameters to enter. I obviously wanted the exact same color profile I had in Ae but how could I know which one is it.  I was told the footage was shot in Sony f5, slog2, raw. but I already keyed the footage on what appears to be some sort of rec709 color space. so I entered those in the Raw app and exported a dpx 444 (the only option for 444) with these settings:

and now it's about 90% what it was before, some keying had to be readjusted but I am in the clear for finishing the project

now I know this is a mess of a workflow my questions is:

1. is there a reason the footage came distorted like this from the camera and I had to use the RAW viewer software to reexport it?

2. what was the color profile on this RAW footage? is there a way to tell? how can I know to match it if I get this type of scenario again?

3. what would be the right way to work? export from RAW viewere as s-log2, then in Ae convert to linear and key? I have looking into http://opencolorio.org/ but after converting from slog2 to ACES, the image looks too contrasty for keying. 

thanks