DCP turns slightly darker than original

Anything and everything to do with DCP-o-matic.
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dolph
Posts: 7
Joined: Mon Nov 23, 2015 4:02 pm

DCP turns slightly darker than original

Post by dolph »

Hi,
My DCP (SMTP rec.709 settings) Turns out slightly darker than my Master. I've got a DCP player where I can play the DCP.
See example. Up is DCP player and below is Quicktime.

What could that be. [attachment[/attachment]
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carl
Site Admin
Posts: 2338
Joined: Thu Nov 14, 2013 2:53 pm

Re: DCP turns slightly darker than original

Post by carl »

Hi,
Could be a number of things. What file did you use to make the DCP from, and where did you export that file from? Is your player picking up that the source file is Rec. 709?
dolph
Posts: 7
Joined: Mon Nov 23, 2015 4:02 pm

Re: DCP turns slightly darker than original

Post by dolph »

The master file is a proves 422HQ. Exported from FCPX. The DCP player plays sRGB. If I set the colour conversion in DCPmaker on sRGB the result is the same. A little darker.
Carsten
Posts: 2648
Joined: Tue Apr 15, 2014 9:11 pm
Location: Germany

Re: DCP turns slightly darker than original

Post by Carsten »

You will never get exactly the same result with an arbitrary choice of players and color spaces. Quicktime has a long history of complaints regarding gamma shifts, etc.

The only way to get this right is to watch the DCP in a cinema environment with a reliable color and gamma reference, and grade as necessary.

- Carsten
dolph
Posts: 7
Joined: Mon Nov 23, 2015 4:02 pm

Re: DCP turns slightly darker than original

Post by dolph »

Thanks, that make sense. Actually I'm testing as we speak at a cinema. Thanks for the support!
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