Luminous Landscape Forum

Raw & Post Processing, Printing => Colour Management => Topic started by: kevs on December 12, 2009, 11:10:27 am

Title: Calibration advice needed, new imac
Post by: kevs on December 12, 2009, 11:10:27 am

Just got new 27” imac.
What do you recommend I do for calibration?
Before I had the Sony Artisan with it’s puck — but that went bad, yet it held a good calibration anyway.

Someone on a forum had a link (which I can't find now), to a black and white rectangle that if it was not grey, if it changed to weird colors, green/magenta you knew you were not calibrated.

Of course with that, the thing may look different if opened in safari or Firefox or preview.

If I don't have to buy a 3rd party --and can do it with apple calibrator --app that would be preferred, but I'll take your recommendation

But no matter what -- how do you really know you are calibrated?

That's' what was good about the Artisan system, it said 'your monitor is calibrated"

Is there some reference file you can download which does something like that?
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Title: Calibration advice needed, new imac
Post by: tokengirl on December 12, 2009, 12:49:53 pm

Colormunki Photo worked wonders on my 24" iMac.  It brought down the ridiculous brightness to a normal level.

Title: Calibration advice needed, new imac
Post by: Czornyj on December 12, 2009, 01:07:59 pm

(http://members.chello.pl/m.kaluza/lcd_butcher.png)

Title: Calibration advice needed, new imac
Post by: kevs on December 24, 2009, 03:03:49 pm

Quote from: Czornyj

(http://members.chello.pl/m.kaluza/lcd_butcher.png)

Czornyj
what is this chart you  uploaded? thanks

Title: Calibration advice needed, new imac
Post by: John S C on December 26, 2009, 08:11:56 am

If it's any help I have a 27" iMac and it calibrated with a Eye-One and Coloureyes Display Pro software.

You need to drop the brightness down to about 40-50% to get a brightness range of about 110-130cd/M2 , but you can do this using the brightness slider in system prefs. I also used the colour temp control in the calibration option in the advanced tab to get the RGB values a into range for the calibration.

Monitor calibrated well, with a Max DeltaE of 0.69
 and an average of 0.39

Title: Calibration advice needed, new imac
Post by: Czornyj on December 26, 2009, 11:06:18 am

Quote from: kevs

what is this chart you  uploaded? thanks

The micropattern in that chart looks grey when the TRC of the display is properly calibrated to gamma 2,2. When the displays gamma is too low, the pattern exhibits red, green and blue cast, and when its too high it exhibits cyan, magenta and yellow casts.

As for the calibration device, i'd choose ColorMunki and Argyll CMS to calibrate the iMac 27". The new iMac has pseudo-white LED backlight - not a problem for spectrophotometer, but may drive colorimeter into the bushes.

Title: Calibration advice needed, new imac
Post by: kevs on December 26, 2009, 02:23:41 pm

C
CAN YOU delete all those files you accidentally uploaded (over 100)
Causing Safari to freeze up. just leave one good one up.

It looks colorful in Safari, but neutral in Preview, what app do I judged the chart in?