Luminance value for 17 inch MacBook Pro

[tsinsf]

I use a 2008 17 inch MacBookPro with a matte screen when I am on the road to review my photos. I'd be interested to know what others experiences with various luminance values have been? I mostly view it indoors under tungsten light. Thanks!!
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[digitaldog]

The luminance value that produces a match to a print, otherwise, go lower and get more life out of the display.

[tsinsf]

Could you suggest a starting point?

[Jeff Magidson]

It somewhat depends on the brightness of your working environment. In the subdued lighting of my computer work area, a  luminance value of 70 works for me.

[dchew]

Mine is about the same. A brightness setting of 68.5.  It corresponds to a luminance of around a 100-120.

Dave

[John Caldwell]

I should know this but don't: How are you all setting and quantifying these display luminance or brightness levels? Is it the display calibration process, or is it separate from that?

Thank you,

John Caldwell

[digitaldog]

Should be part of the calibration process and of course more importantly, the profiling part (the profile has to define the behavior).

[dchew]

John,
The luminance value is from the profiling software.  The associated brightness level is not so direct. Wayne Fox gave me a simple app that tells me the setting.  It goes something like this:

tell application "System Preferences"
   activate
   set current pane to pane "com.apple.preference.displays"
end tell
tell application "System Events" to tell process "System Preferences"
   tell slider 1 of group 2 of tab group 1 of window 1 to set x to value
   display dialog x
end tell

That tells you the brightness level the mbp is set at.  Mine is 0.6875.  That setting corresponds to a luminance value that is my target.  So if I am on a plane and want to change it temporarily (or if I hit the brightness keys accidentally), I can change it back and check that the setting is indeed 0.6875.

Dave