Re: iPhoto
Re: iPhoto
- Subject: Re: iPhoto
- From: John Gnaegy <email@hidden>
- Date: Tue, 29 Oct 2002 11:34:13 -0800
iPhoto along with all other OS 10.x apps...will display images the
same as Photoshop
This isn't true. ...
Applications must still be specifically written to do things like
honor embedded ICC profiles and then use display compensation, which
iPhoto doesn't do.
Chris Murphy
Chris is right, just because an app runs on MacOSX doesn't mean it uses
embedded profiles. Here are some general rules, and some exceptions.
Classic applications usually don't use embedded profiles unless they're
specifically color oriented, like Photoshop. Internet Explorer is
probably the most widely used Classic app that does use embedded
profiles, go to
http://homepage.mac.com/gnaegy/color to try it out.
"Classic app" is just another term for the apps you used before MacOSX.
They'll run if you're booted into 9, and they'll run in MacOSX if you
have the Classic environment running, launch System Preferences and
check out the Classic tab for more info. When you're running MacOSX in
Column view or using Get Info, selecting a Classic app will show "Kind:
Classic Application".
Cocoa applications only run on MacOSX. Most Cocoa apps draw images
using the NSImage class which uses embedded profiles. The MacOSX mail
app Mail draws images as instances of the NSImage class, so when you
create a new piece of email and drag a jpeg into it, the jpeg is
matched from its embedded profile to your display's profile and then
drawn. (Technically, it's matched to the profile of your primary
display device. If you have more than one display, you can choose
which is your primary display device using ColorSync Utility.)
Preview also uses NSImage, so you get embedded profile behavior there
too. But not all Cocoa apps use NSImage for drawing. iPhoto does not
use embedded profiles because it doesn't use the NSImage class for
images. But that's the exception to the rule, the most common approach
for Cocoa apps is to use NSImage and so inherit all the good behaviors
built into the NSImage class.
---
John Gnaegy
ColorSync
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| References: | |
| | >Re: iPhoto (From: Chris Murphy <email@hidden>) |