Apple Discussionsの以下のスレッドで知りました。 ttp://discussions.apple.com/thread.jspa?threadID=645557&tstart=0
>I found this great little gamma control that has made my imac monitor perfect. >It is called gamma control and can be found at this site: >www.michelf.com/projects/gamma-control/ >For my 24" monitor I have set the following: >Gray Balance at 1.00 >Black Point: RGB at 0.00 >Middle Point: RGB at 1.00 >White Point: RGB at 0.55 >Hope this helps others that may be having trouble with a too bright imac screen.