Re: Apple 30" monitor
Re: Apple 30" monitor
- Subject: Re: Apple 30" monitor
- From: Marco Ugolini <email@hidden>
- Date: Wed, 19 Mar 2008 13:01:44 -0700 (GMT-07:00)
David wrote:
>Please, what is the consensus on the Apple 30" monitor? Thinking about
>getting one but have heard that they cannot be tightly calibrated.
>Also appreciate any suggestions of a better way to go for similar
>price. Thanks for any feedback.
David,
Apple's monitors only allow the user to control the backlight's brightness. There are no controls over either contrast or RGB LCD filters.
Probably, the best way to calibrate and profile monitors like this one (with greatly limited controls) is to use "Native White Point" -- which many profiling software packages allow the user to do. Using "native white point" instead of a target color temperature greatly reduces possible banding due to the decreased number of steps from the maximum of 256 (in 8 bits) to a lower number after the profile's look-up-tables (LUTs) apply a curve to the RGB signals from the display card to match a target color temperature.
On the other hand, if you are using a viewing booth next to your monitor, you will want to measure the white point of the booth itself, and then match the monitor's own white point to it. In which case, you should *not* use "native white point" for your monitor's display.
There are also problem with Apple Cinema Display models exhibiting both unevenness (as pointed out by Derek Cooper), as well as troubling and sometimes disturbingly evident signs of monitor "burn-in", whereby one sees etched on the screen the lingering image of windows and interface elements that were displayed for a certain amount of time on the monitor. This is similar to what used to happen on CRTs.
I have seen a high enough number of severe cases of this type of "LCD burn-in" on ACD models (if that's the right name for it) to say that one should be aware of its possibility, and act carefully when selecting these displays. From what I know, this "burn-in" effect was not nearly as common on older Apple LCD monitors, like the Studio models of a few years back, and has become apparent on the latest ones, which are probably built more cheaply.
Marco Ugolini
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