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Don’t know about anyone else but I’ve never been able to get a good calibration on my various laptops over the years with my Eye-One calibrators (or a Colorvision I tried). Rob Galbraith has a review of the new laptops up that, near the bottom, explains how they accidently found out how to calibrate the screens well. I just tried my 2.33 core2due 17” and it’s very close to my ACD 23” on my Mac Pro. I’m a happy camper, this is a major thing to me. I’ll post the link as well as the related text (hope Rob doesn’t mind).
http://www.robgalbraith.com/bins/content_page.asp?cid=7-8741-9027
”...The good news doesn’t stop there: in the course of testing the new MacBook Pro, we stumbled across a counterintuitive way to calibrate older MacBook Pros that happens to eliminate most of their colour quirks, which in turn moves them back into the suitable-for-viewing-and-basic-editing category. The process is fairly simple:
Run the calibration once normally, adjusting the screen’s backlight control (the Brightness slider in the Displays system preference) to reach the desired white luminance (120cd/m2 in our case). If your monitor calibration package allows for this, you can stop the calibration process once you’ve set the Brightness slider. Note that you can also adjust screen brightness using the computer’s dedicated function keys for this, but the Brightness slider in Displays steps the backlight up or down in finer increments.
Then, record the position of the Brightness slider. About the easiest way to do that is to take a screenshot. Command-Shift-3 will grab a picture of the entire screen, while the more-useful Command-Shift-4 will enable you to select what you want captured.
Move the Brightness slider all the way to the right to full brightness, then run the calibration from start to finish with the same parameters (ie 6000K, 2.2 and 120cd/m2), but this time skip the step where you adjust the backlight. In other words, run the entire calibration with screen brightness at maximum.
Once you’ve completed the calibration and saved a profile to your system, set the Brightness slider in Displays back to the position you noted in step 2.
With both the second-generation 15-inch and 17-inch MacBook Pros, performing the calibration this way eliminated the main gripes we’ve had with these displays, and was repeatable with more than one monitor calibration package, so it’s likely not a fluke but rather a way to work around something strange about how these displays respond to profiling when their CCFL backlight is dimmed first.
By our own subjective standard of acceptability, the older machines’ displays pass the test when profiled this way. The only apparent hitch in this oddball calibration technique is a slight loss of deep shadow gradation: to be precise, shadows block up at tone level 4 of 256 in Adobe RGB, as compared to level 2 of 256 in the same colour space when white luminance is set before profiling. Given the other benefits, this is a loss we can live with.”
by
Dave Yoder
at
Tue Jul 10 13:29:34 UTC 2007
(ed. Mar 12 2008)
Milan,
Italy
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