Hey Frank,

We had a F65 ACES project last year and after a few tests with Colorworks
to match our pipeline (DaVinci) to theirs (Baselight), we went with Sony's
RAW Viewer for the conversion because DaVinci was yielding a saturation
shift on the reds in the conversion that didn't happen in Baselight. After
some digging we concluded that DaVinci was using an old IDT that wasn't
recommended by Sony, so we stuck with RAW Viewer which was using the same
IDT present in Baselight.

The conversion in Sony's RAW Viewer was done using the Color set to ACES,
Viewer Settings to RRTODT_sRGB (v011 at that time), export format set to
OpenEXR 16bit and the Bake option set to ACES/Linear. Nothing esoteric.

Perhaps this low saturation you're seeing is due to the F65 gamut to ACES
gamut. Because for what I remember the converted files did look duller than
linear files with a smaller source gamut once you look at them in their
linear form.

Once you apply a Rec.709 RRT does the saturation look "normal" or "match"
the same material converted to Rec.709 in the RAW Viewer directly?


Cheers,
Diogo







On Sun, Mar 2, 2014 at 7:26 PM, Frank Rueter <[email protected]> wrote:

> Hi all,
>
> has anybody got experience with transcoding Sony' MXF files (coming from
> the F65) to proper ACES linear exrs?
> When I try (using Sony's RawViewer), I get very flat colour separation,
> i.e. very low saturation, which certainly does not seem right in scene
> referred linear space, which I thought ACES linear is all about.
>
> Has anybody had similar problems (and maybe solutions)?
>
> Cheers,
> frank
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