From: "Roei Tzoref" <AE-List@media-motion.tv>
MIME-Version: 1.0
Date: Wed, 31 Jan 2018 04:24:32 +0200
Message-ID: <CANWqp8a5Y2w24UHoH9dVKn-KjBf6=ReSvMW8Lqt_rYYOeGWuHg@mail.gmail.com>
Subject: Greenscreen s-log2 workflow queries for the color spaced challenged
To: After Effects Mail List <AE-List@media-motion.tv>
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hey y'all.

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:
https://imgur.com/a/ZkcQ0

on 200% it looked a bit funky but I just ignored it (WRONG!) and carried on.
https://imgur.com/a/j7eyG


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:
https://imgur.com/a/wgewj

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.
https://imgur.com/a/K0YYZ

thanks

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<div dir=3D"ltr">hey y&#39;all.=C2=A0<div><br></div><div>so I got a footage=
 to key and roto. I have been told it&#39;s 444=C2=A0 so was pleased.</div>=
<div><br></div><div>it was an mxf file, imported to Ae and saw it was state=
d as RAW. I saw the color and contrast was good and immediately got to work=
.</div><div><br></div><div>this is how it looked in Ae:</div><div><a href=
=3D"https://imgur.com/a/ZkcQ0">https://imgur.com/a/ZkcQ0</a><br></div><div>=
<br></div><div>on 200% it looked a bit funky but I just ignored it (WRONG!)=
 and carried on.</div><div><a href=3D"https://imgur.com/a/j7eyG">https://im=
gur.com/a/j7eyG</a><br></div><div><br></div><div><br></div><div>about 80% i=
nto the project it started to bug me so I asked the cameraman and indeed so=
mething 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 p=
rofile I had in Ae but how could I know which one is it.=C2=A0 I was told t=
he footage was shot in=C2=A0Sony f5, slog2, raw. but I already keyed the fo=
otage on what appears to be some sort of rec709 color space. so I entered t=
hose in the Raw app and exported a dpx 444 (the only option for 444) with t=
hese settings:</div><div><a href=3D"https://imgur.com/a/wgewj">https://imgu=
r.com/a/wgewj</a><br></div><div><br></div><div>and now it&#39;s about 90% w=
hat it was before, some keying had to be readjusted but I am in the clear f=
or finishing the project</div><div><br></div><div>now I know this is a mess=
 of a workflow my questions is:</div><div>1. is there a reason the footage =
came distorted like this from the camera and I had to use the RAW viewer so=
ftware to reexport it?</div><div>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 t=
ype of scenario again?</div><div>3. what would be the right way to work? ex=
port from RAW viewere as s-log2, then in Ae convert to linear and key? I ha=
ve looking into <a href=3D"http://opencolorio.org/">http://opencolorio.org/=
</a> but after converting from slog2 to ACES, the image looks too contrasty=
 for keying.=C2=A0</div><div><a href=3D"https://imgur.com/a/K0YYZ">https://=
imgur.com/a/K0YYZ</a><br></div><div><br></div><div>thanks</div><div><br></d=
iv><div><br></div></div>

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