[argyllcms] Re: Monitor calibration questions
- From: adam k <aak1946@xxxxxxxxx>
- To: "argyllcms@xxxxxxxxxxxxx" <argyllcms@xxxxxxxxxxxxx>
- Date: Wed, 10 Mar 2010 13:56:12 -0500
Where can I get newest version of dispaygui and argyll?
Thank you!
Sent by AAK from iPhone 3Gs
On Mar 10, 2010, at 1:36 PM, "Michel Joly de Lotbinière" <michel@xxxxxxxxxxxxx
t> wrote:
> I've always had better results on my notebook LCD panel with a 1
> channel shaper curve matrix profile. No matter what I do
> (preconditioning the target patches, increasing the number of
> measurement patches, specifying a gamma close to native response,
> etc.), I still get faintly warm black values in the grayscale range
> RGB(3,3,3) to about RGB(30,30,30), whether the CMM is the Windows one
> or LittleCMS. The grayscale is only entirely neutral when the profile
> is a single channel matrix/shaper type.
>
> The real, recent surprise for me was upgrading to the most up-to-date
> of ArgyllCMS + Florian Hoech's dispcalGUI: I simply set-up dispGUI to
> use the high-quality profiling options, D6500, gamma 2.2, the extended
> patch set (just 80+ patches, I think), and to produce a 1-channel
> shaper/matrix profile unattended, and when I returned from the
> supermarket, the result was entirely acceptable, totally easy &
> trouble-free in bringing the LCD colors to a known, usable state.
>
> Hats off to Graeme and Florian! The commercial vendors of
> user-friendly monitor profiling packages might want to start
> worrying...
>
> On Wed, Mar 10, 2010 at 7:17 AM, Roger Breton <graxx@xxxxxxxxxxxx>
> wrote:
>> John,
>>
>> Have you tried using your Spyder on another monitor, to see whether
>> the instrument itself could be introducing a distortion in the
>> measurements? Or try with another software?
>>
>> Roger
>>
>>>
>>> Hi there,
>>>
>>> I have been trying to calibrate/profile my monitor with argyll. I
>>> have a
>>> Colorvision Spyder 2 Express. The monitor in question is a laptop
>>> screen,
>>> specifically it is a "Dell 15.4 WSXGA+ with TrueLife".
>>>
>>> Basically, my attempts have been pretty unsuccessful. Every
>>> calibration I do
>>> ends up having lots of magenta, such that blacks and greys on the
>>> screen
>>> have a distinctive colour cast. I presume this is not correct - it
>>> certainly
>>> doesn't make photos look very good!
>>>
>>> I have read about "dynamic contrast" monitors, and apparently they
>>> aren't
>>> any good for profiling unless you can turn it off. I can't really
>>> find any very
>>> technical details about the screen, and have no idea whether it
>>> has "dynamic
>>> contrast" or not. Also, there are no hardware controls for the
>>> screen, so I
>>> can't really adjust it at all before doing the calibration. Could
>>> this be the
>>> problem?
>>>
>>> Alternatively, I know my colorimeter is a pretty cheap model, so
>>> perhaps it is
>>> just not working very well?
>>>
>>> Any thoughts would be appreciated.
>>>
>>> Many thanks,
>>> Jon Leighton
>>>
>>
>>
>>
>>
>
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