On Apr 13, 2005, at 3:51 PM, Rob Studdert wrote:
On 13 Apr 2005 at 9:26, Godfrey DiGiorgi wrote:
If I choose the "sRGB IEC61966-2.1" profile in System Preferences->Displays and then open Safari on your test page, the display of the sRGB images with and without profile match much more closely, while the ProPhoto image with embedded profile continues to match the sRGB with profile. The ProPhoto image without the embedded profile shows low saturation as expected.
Of course, by doing that I've chosen not to honor the monitor-specific calibration I generated with Eye One Display and print quality will go out of spec.
OK that's a pity, if they had an option which assumed that non-embedded images
were sRGB (g2.2) then you could run your display profile at 1.8 and still have
99% of graphics rendering as intended (idiots who write files using non-sRGB
colour spaces and don't embed deserve the flack).
In the current Windows system it appears that colour management is implemented
in a different way. The monitor colour space is associated with the monitor
device, most CS aware apps (such as PS & ThumbsPlus) allow a default working
colour space to be specified, however the monitor space doesn't affect print
output so long as you are visually editing using the colour space of the print
device as the proof view.
IOW I can run a g1.8 desk-top (monitor profile) and still edit in an sRGB work-
space and output for print with the full expectation that my prints will come
back from the bureau looking like they did in my proof work-space (so long as
they are converted before output to the printers specified work-space). The
monitor profile just tells the apps how the monitor will behave in effect, it
doesn't change file rendering as such.
I don't know that Mac OS X's ColorSync is any different in terms of its practical functionality (... most developers have told me it has much more functionality, I take their word for it as I haven't needed to develop any applications which needed other than standard functionality). I can edit in any working colorspace in Photoshop I want, proof for a printer with a supplied and different profile, etc.
But Safari is not an image editing application. Its calibration is relative to the System Prefs choice for the user and all it does is render images based on those settings. A custom monitor profile means that everything on screen is in proper calibration and the images look their best .. *and* match what the printer delivers through its profile.
Godfrey
