[argyllcms] Re: Dell U2711 - is it any good?
- From: adam k <aak1946@xxxxxxxxx>
- To: "argyllcms@xxxxxxxxxxxxx" <argyllcms@xxxxxxxxxxxxx>
- Date: Tue, 21 Jun 2011 16:25:17 -0400
However, CM display software offers only visual profile validation.
Which is useless.
Sent from iPhone
On Jun 21, 2011, at 4:19 PM, Rishi Sanyal <rishi.j.sanyal@xxxxxxxxx> wrote:
> FWIW, I can confirm that in my hands, the profiles made by the
> following techniques:
>
> 1) ColorMunki + dispcalGUI/argyll using adaptive mode
> 2) i1 Display 2 colorimeter using correction matrix generated my
> ccmxmake using ColorMunki
>
> ... are very similar. Doubtful I can tell the difference.
>
> If there were some objective way to test the quality of the profiles,
> that'd be great. I just don't know how to without a reference grade
> spectrophotometer. Using a hardware device to check itself is useless,
> as I understand it.
>
> To answer Knut's question, I'd assume that even the 7 channel one can
> generate a 3-channel correction curve. The extra channels just help to
> correct for mismatches between the filters & primaries.
>
> I'd be curious to know of what changed in the new X-Rite ColorMunki
> Display & i1 Display models introduced today. X-Rite claims these are
> good for wide-gamut displays, as well as 'future' technologies. How?
>
> -Rishi
>
>
> On Tue, Jun 21, 2011 at 11:42 AM, Knut Inge <knutinh@xxxxxxxxx> wrote:
>> Thank you for your input.
>>
>> Are there any correction curves out there that I could have a go at?
>> For instance anyone that has calibrated their Dell u2711s using a
>> Spyder 3 AND a spectroradiometer, producing a correction for that
>> setup (ignoring unit-to-unit variance)? Or 2nd best would be (I guess)
>> anyone doing something similar for a Spyder 3 and any wide-gamut s-ips
>> CCFL display, perhaps the Nec pa271w or the Apple 27"?
>>
>> Should the Spyder 3 correction curve ideally be 7-channel (as it is a
>> 7-channel native sensor), or is it sufficient to do correction of the
>> 3-channel default mix of those?
>>
>> regards
>> k
>>
>> On Mon, Jun 20, 2011 at 11:18 PM, Rishi Sanyal <rishi.j.sanyal@xxxxxxxxx>
>> wrote:
>>> "But then those correction curves would only be strictly valid for a
>>> given pair of measurement device and display. "
>>>
>>> Exactly. Which is why I think they worked better in the days of CRTs
>>> with less variability between phosphors. These CRTs also typically had
>>> a sRGB-like response.
>>
>>
>
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