8 Jul
2018
8 Jul
'18
8:09 p.m.
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 ?
(Here below timeline shots from premiere)
Thanks in advance for your help.
Jean
The dcp Omatic image after processing : (purple artefacts on the top left)
Original footage :
8 Jul
8 Jul
8:43 p.m.
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
9 Jul
9 Jul
4:01 p.m.
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
_______________________________________________
DCPomatic mailing list
DCPomatic(a)carlh.net
http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
8:43 p.m.
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
_______________________________________________
DCPomatic mailing list
DCPomatic(a)carlh.net
http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
9:15 p.m.
HI,
I am not a freak in quality but on a big screen the difference is huge. We did process the
same footage from Premiere on a Doremi calculator and we did not have theses artefacts.
There are generated by DCO. I wonder if some proper settings could avoid the issue in DCO
?
Thanks for your kind answers.
Best regards
Jean
Le 9 juil. 2018 à 22:43, Carl Hetherington
<cth(a)carlh.net> a écrit :
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
>>
>> _______________________________________________
>> DCPomatic mailing list
>> DCPomatic(a)carlh.net
>> http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
24 Jul
24 Jul
2:02 p.m.
Hi Jean
Do you still have the bad and good DCPs (DoM- and Doremi-created)?
Looking at the differences between them might shed some light.
Kind regards,
Carl
On Mon, 9 Jul 2018, Septieme Factory wrote:
HI,
I am not a freak in quality but on a big screen the difference is huge.
We did process the same footage from Premiere on a Doremi calculator and
we did not have theses artefacts. There are generated by DCO. I wonder
if some proper settings could avoid the issue in DCO ?
Thanks for your kind answers.
Best regards
Jean
Le 9 juil. 2018 à 22:43, Carl Hetherington
<cth(a)carlh.net> a écrit :
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
>>
>> _______________________________________________
>> DCPomatic mailing list
>> DCPomatic(a)carlh.net
>> http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
9 Jul
9 Jul
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
>
> _______________________________________________
> DCPomatic mailing list
> DCPomatic(a)carlh.net
> http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
_______________________________________________
DCPomatic mailing list
DCPomatic(a)carlh.net
http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
6:44 p.m.
Am 08.07.2018 um 22:09 schrieb Septieme Factory via DCPomatic:
The dcp Omatic image after processing : (purple
artefacts on the top left)
><Original footage.tif>
Hmm - my current machine and/or eyes may not work properly - can you pinpoint the issue to
me in those pictures you sent?
How did you create these TIFs? I sometimes see strange color artifacts just because of
some display or screen grab issues. Where/how did YOU notice them? Playing the DCP? On a
cinema/DCI projector?
- Carsten
7:26 p.m.
I was looking at it too and could not see the artifacting.
-Parke
On Mon, Jul 9, 2018 at 1:44 PM, Carsten Kurz via DCPomatic <
dcpomatic(a)carlh.net> wrote:
Am 08.07.2018 um 22:09 schrieb Septieme Factory via DCPomatic:
--
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parke Gregg
Colorist/Editor/Project Finisher
Stuck On On
www.stuckonon.com
512.535.4760
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The dcp Omatic image after processing : (purple
artefacts on the top
left)
<Original footage.tif>
Hmm - my current machine and/or eyes may not work properly - can you
pinpoint the issue to me in those pictures you sent?
How did you create these TIFs? I sometimes see strange color artifacts
just because of some display or screen grab issues. Where/how did YOU
notice them? Playing the DCP? On a cinema/DCI projector?
- Carsten
_______________________________________________
DCPomatic mailing list
DCPomatic(a)carlh.net
http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
10:07 p.m.
Am 08.07.2018 um 22:09 schrieb Septieme Factory via DCPomatic:
The dcp Omatic image after processing : (purple artefacts on the top left)
<DCP Omatic.tif>
Original footage :
<Original footage.tif>
Why is the DCP-o-matic image 1920/1080, when the original is 1998/1080? Which comes out
as: How do you get a 1920/1080 TIFF from a 1998/1080 DCP? I know there are different ways
to do this, but we need to now what happens and where you see that difference. I see a
slight gamma difference when flipping between both images, but I am not surprised assuming
that we go from RGB to XYZ and back at least partially using unknown transformations.
- Carsten
2470
days inactive
2486
days old
9 comments
5 participants
participants (5)
-
Carl Hetherington -
Carsten Kurz -
CJ | Digital Test Tools -
Parke Gregg -
Septieme Factory