9 Jul
2018
9 Jul
'18
10:22 p.m.
When I create a diff in photoshop after I cropped the sides of the original flat image to
1920, the result is black. Yes, there are (global) subtle differences I can pull up by
increasing the contrast of the diff, but they look normal to me given the fact that there
probably were two non-matching RGB-XYZ, gamma and inverse transforms involved.
'Artifacts' in my opinion should show out clearly in a diff.
- Carsten
...gesendet von unterwegs
Am 09.07.2018 um 22:43 schrieb Carl Hetherington via
DCPomatic <dcpomatic(a)carlh.net>et>:
The differences are very subtle on my cheap and uncalibrated monitors.
In fact I can only see them if I stand up and look down on the screen,
oddly!
Is there some increased stepping (quantisation) of colours going on in the
DoM output, or am I imagining that?
Best,
Carl
On Mon, 9 Jul 2018, CJ | Digital Test Tools
wrote:
Just wondering, Jean...
Did anything else change in your setup coinciding with the last Premiere version?
Monitors? Project parameters?...or perhaps did Premiere change you into a different color
space – 709 to P3? Looking at your Tiff files on 2 different P3 screens, they don’t look
that different though I can see from the histograms that there are shifts in all the
colors.
Thus, I wonder if there are other things going on in the set up.
C J Flynn
Typeos from CJ's iPad
> On Jul 8, 2018, at 1:43 PM, Carl Hetherington via DCPomatic
<dcpomatic(a)carlh.net> wrote:
>
> On Sun, 8 Jul 2018 22:09:48 +0200
> Septieme Factory via DCPomatic <dcpomatic(a)carlh.net> wrote:
>
>> Hi,
>>
>> I have been making DCP for a wile and since the last Premiere CC update I have
purple artefacts in blue color.
>> Does anyone have notice that and know a way to avoid it ?
>
> Are you going into DCP-o-matic with TIFF files? Do you have TIFFs from the working
and non-working versions of Premiere?
>
> Kind regards,
> Carl
>
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