Hi Douglas
On Wednesday, March 5, 2003 at 8:47 am,
Douglas Burns, DBurns-at-francisfrith.co.uk, wrote:
> Hi All
>
> Apologies as I think this has been covered before but does anyone know the
> optimum Gamma to set in the control panel (OSX) for the Apple 15" LCD?
Traditionally Apple screens were adjusted in hardware to have a gamma
of 1.8 (said to be done to be closer in apearance to an early colour
printer they made.)
Almost all CRT's have a native gamma of 2.2 or over [said to be about
1.3-4 on average. Screens calibrate better [less adjustment applied in
the video card] at near to native gamma.
Set 2 screens alongside each other, calibrate one to 2.2 and one to
1.8, the desktop and unmanaged apps like browsers will look different,
[1.8 = brighter] but in Photoshop (because the gamma is part of the
profile) an image should look virtually identical. [Possibly you'll see
a bit more shadow detail on the perceptually linear 2.2 screen].
>
> Up to now I've had it set at 1.8 (as recommended for Apple screens in the
> control panel)
and that's perhaps right, depending on when it was made, although the
newer Apple LCD's are said to be 2.2 devices. [my 17 works well at 2.2]
> but last night I was experimenting and changed it to 2.2. I
> turned up the brightness slightly to compensate for the darkening and am
> surprised to find how much better the screen looks; it appears more vibrant
> and punchy.
Then you can go that way if it's a preference.
>
> I don't yet have a profile for my 1160 (lack of funds!) so my prints
> aren't as accurate as I'd like, but look much more like the screen at
> 2.2 than 1.8.
an image in Photoshop 5 or later should not look different [of course
with software calibration it's pretty difficult to mainitain constancy
between calibrations so perhaos that's it?]
>
> Can anyone tell me how I should set up my monitor, please.
you'll need better calibration than Adobe Gamma offers for a start, but
choose the gamma you like [for browsing the web 2.2 will give you an
appearance similar to that seen by average PC users.
Regards, NeilB
colourmanagement.net :: Consulting in Imaging & Colour Management
custom scanner and printer profiles, training on Trident & Imacon Scanning
supply Gretag and eyeOne, ICS basICColor series, XRite, OptiCal
http://www.colourmanagement.net/ ::: www.apple.com/uk/creative/neilbarstow/
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