Cheers infocusinc, well I'll declare that I've never used a hardware/software solution but from what I understand (and I may need correcting), this is a two part process where you have a tool that will read colour patches on the screen and some software to set-up and manipulate the results to obtain as near as possible a 'screen to print' match. The 'screen to print' match is ultimately a WYSIWYG eyeball test where you would compare the results in print with it's originator on the screen.

Leaving all the other variables apart, what set's this method apart from the iMac's own screen display calibrator which is comprehensive enough ? Is it the screen tool, the software or a combination of the two?

Both methods rely ultimately on the eyeball test I would think, except the iMac version does so from start to finish.

I would be interested to know your opinion also on LED screens and ocular health and as to whether we should be using calibration ultimately to reduce injury and degeneration. It's not that long ago that we were working on CRT with UV filters stuck to the front.

http://www.gtc.org.uk/media/fm/Zerb%...ty%20final.pdf