Re: U-DACT tests for informal comparison of Eye-One Pro and DTP94
Re: U-DACT tests for informal comparison of Eye-One Pro and DTP94
- Subject: Re: U-DACT tests for informal comparison of Eye-One Pro and DTP94
- From: Roger Breton <email@hidden>
- Date: Mon, 03 Dec 2007 09:04:16 -0500
Hello Martin,
Thank's a lot for sharing that wealth of data with this List!
You know, apart from the obvious differences between the two instruments,
the first thing that strikes is the freedom in the Referene White? The UGRA
site states :
> The Ugra Display Analysis and Certification Tools (UDACT) is based on ISO
> 12646 and the color patches of the widely accepted Ugra/Fogra Media Wedge.
If it's 12646, I fail to see how Ugra can offer a choice of Reference White?
D50 is the 12646 Standard. Someone asked Ugra about this in the recent past?
> Tests were informally done. Things that I find interesting are firstly
> that the Eye-One Pro measures better gray balance results from the
> DTP94 produced profile.
Have you noticed the ISO Caoted 100% cyan? Wow! 11 deltaE was it for the i1
Optix and 5 for the Optix? I wonder how the same cyan would fare on an Eizo
CG221.
Those results are certainly worth discussing.
> Secondly, there is something really odd going
> on with the white point measurements. The Eye-One Pro produces a 5800K
> match that looks more like 6000+ to me on screen. So I can understand
> it failing the DTP94 calibration on white point but can't understand
> how the DTP94 passes the Eye-One Pro white point?
Uh?
Roger Breton
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