Re: Monitor Calibration
Re: Monitor Calibration
- Subject: Re: Monitor Calibration
- From: "J.Raimar Kuhnen-Burger" <email@hidden>
- Date: Wed, 18 Nov 2009 18:25:51 +0100
- Thread-topic: Monitor Calibration
Hallo Klaus,
Keep in mind that these have just only be measurements of the white.
Especially for wide gamut units, all colorimeters need a correction. And, as
I´ve wrote, they also need a correction for every other display that does
not match the device manufacturer´s internal standard.
With precise corrections everything is getting better. The Delta between a
DTP94 and a CS2000 drops to 0.001uv for the whitepoint.
Using EDID data is not the right way as the EDID data is in most cases not
identical to the real values. As soon as you change the whitepoint or adjust
the LUT, the xy chromaticity of RGB change and that is not compensated by
the EDID even if it is precise.
Best regards
Raimar
am 18.11.09 15:41 schrieb Klaus Karcher unter email@hidden:
> Hello Raimar,
>
> thank you very much for this valuable information.
>
> J.Raimar Kuhnen-Burger wrote:
>> Hi Graeme,
>>
>> i´ve showed inter instrument agreement only between the EyeOnes, Spyder3s
>> and DTP94s, not against the Minoltas. The Minoltas are used for comparison
>> and for reference only. But here are some simplified numbers - averaged from
>> 10 devices that are quite close to each other - against the CS2000 for your
>> records. To trace the real behavior, there have been no device corrections
>> used.
>>
>
> I've normalized the measurements to L=100 and calculated DE00 to the
> reference instrument to make your results more vivid for me:
>
>> sips72ccfl
> ID nits XYZ_X XYZ_Y XYZ_Z DE00
> 1 ref 121 118 121 105 0.000000
> 2 dtp94 115 110 115 94 6.158537
> 3 spy3 117 113 117 91 7.303911
> 4 i1d2 114 112 114 93 4.838307
> 5 i1p 118 113 118 98 5.134003
>>
>> spva92ccfl
> ID nits XYZ_X XYZ_Y XYZ_Z DE00
> 1 ref 124 121 124 110 0.000000
> 2 dtp94 130 130 130 107 6.969239
> 3 spy3 134 132 134 122 4.250049
> 4 i1d2 130 126 129 107 4.341224
> 5 i1p 130 126 130 111 3.200485
>>
>> sips102ccfl
> ID nits XYZ_X XYZ_Y XYZ_Z DE00
> 1 ref 120 114 120 102 0.000000
> 2 dtp94 117 115 117 88 10.332352
> 3 spy3 115 109 115 95 2.636599
> 4 i1d2 115 116 115 86 14.296324
> 5 i1p 121 116 121 100 2.646035
>>
>> sips108led
> ID nits XYZ_X XYZ_Y XYZ_Z DE00
> 1 ref 122 117 122 102 0.000000
> 2 dtp94 120 119 120 93 8.789449
> 3 spy3 117 112 117 98 1.892420
> 4 i1d2 115 114 115 93 8.141067
> 5 i1p 119 115 119 97 2.704125
>
> I think some of the values are rather alarming. In consideration of
> these results, I ask myself if it might be even better to count on the
> manufacturer's EDID data then on own measurements with inaccurate and
> unsuitable devices in some cases.
>
> Klaus
_____________________________
J.Raimar Kuhnen-Burger
Master of Art (Farbkommunikation)
Diplom Designer (Farbe)
Kunst- und Medienwissenschaftler
Milchberg 26
D-31177 Harsum
Tel./Fax.05127-931006
www.concolori.de
Skype: jrkuhnen
iChat: jrkuhnen
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden