--- In Avid-L2@yahoogroups.com, "Job ter Burg (L2B)" <Job_L2@...> wrote:
>
> I bet the difference is in how QT displats the ProRes QT file. Levels should match.
That's what I would have thought, too, but it doesn't seem to be the case.
I've checked the ProRes export in both After Effects and Photoshop. It shows the values on the test chart are not correct for the ProRes same-as-source CCIR export. Everything below 16 is crushed to 0, 20 maps to 5, 231 maps to 250 and everything above 235 is truncated at 255.
As a test, I also exported the ProRes chart same-as-source with RGB levels selected, since there have been cases of Avid flipping that setting in the past. Output is exactly the same as with CCIR levels selected.
I know you tested this before, as did I (I think it was 6.0.1 that I tested under). I'd be very curious if anyone else can replicate these results under 6.0.3 or above.
Cheers,
--Michael
>
> Sent from my iPad
>
> On Sep 17, 2012, at 18:28, Michael Brockington <brocking@...> wrote:
>
> > I thought the ProRes native handling was supposed to fix this kind of
> > stuff, but the following gives me unexpected results (Running MC 6.0.3
> > software only on 10.7.4)
> >
> > 1. import the belle-nuit test chart as DNx220
> > 2. transcode to ProRes HQ. The original and the transcode appear
> > identical inside Avid.
> > 3. Export a still of both DNx and ProRes as TIFFs -- they appear identical.
> > 4. Export both the DNx and ProRes versions same-as-source, CCIR levels.
> > They look different. The ProRes version looks like it has been exported
> > with RGB levels -- blacks crushed, whites truncated.
>
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