[Webkit-unassigned] [Bug 136968] New: Safari 7.0 and Webkit have a color rendering bug for sRGB tagged images
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Fri Sep 19 17:38:57 PDT 2014
https://bugs.webkit.org/show_bug.cgi?id=136968
Summary: Safari 7.0 and Webkit have a color rendering bug for
sRGB tagged images
Product: WebKit
Version: 528+ (Nightly build)
Platform: Macintosh Intel
OS/Version: Mac OS X 10.9
Status: NEW
Severity: Normal
Priority: P2
Component: Images
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: jvandela at gmail.com
A new bug was introduced with Safari 7.0 and Webkit on Mac OS X Mavericks that makes the gamma display of sRGB images incorrect. Shadow tones display too dark as it appears Webkit does not use the sRGB tone curve but a straight 2.2 gamma (which is wrong). Safari 6 and before did not have this bug and they displayed sRGB images correctly. I illustrate the issue here: http://lagemaat.blogspot.com/2014/09/color-management-in-safari-is-broken-in.html The image should be identical on mouseover in a correctly color managed browser but as you can see it is not. You can also see this on other test pages such as http://www.gballard.net/psd/go_live_page_profile/embeddedJPEGprofiles.html where you'll see the dark tones shifting considerably blocking up shadows in Safari 7.0 and Webkit nightly.
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