Calibrating Imac 24 with Gretagmacbeth and Hummmmm

I have heard some issues with Monitor hum with the new imac 24 when decreasing monitor brightness. I was wondering if anyone has used a monitor calibrator such as the Gretagmacbeth i1 display calibrator and experienced any monitor hum. I’m wondering if the hum happens only when the brightness control slider is used. Anyone have any experience with this?

Hi John
I'm currently awaiting the arrival of our 24" iMac which will join our G5 Dual 2.0 machine in the studio. I've just finished calibrating and profiling a colleagues 24" iMac with the Gretag i1 Pro and ColorEyes Display software.
I turned the brightness all the way down with the keyboard and then profiled it to 65k Gamma 2.2 and a luminance of 120cd/m2. This give a match to our 23" HD Cinema Display (first version - not alloy). The results were really impressive.
If you'd like to have a copy of the profile and the profile validation data that shows just how good this screen can perform with correct profiling email me and I'll forward them on to you.
Regards
Jason
Replica Imaging Limited
www.replica-imaging.co.uk
G5 Dual 2.0, PB15"DL, Quicksilver 733   Mac OS X (10.4.8)  

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