Re: Color in Safari
Re: Color in Safari
- Subject: Re: Color in Safari
- From: John Gnaegy <email@hidden>
- Date: Tue, 12 Oct 2010 18:03:48 -0700
> for all UI elements to be appropriately color managed
They are.
> This is the same for Safari for Windows?
The rules for embedded vs non embedded images are the same, the difference is that content is matched to the profile of the main display even if the Safari window is on a second display.
> Assuming sRGB for untagged images
Yeah, it may have been for the sake of performance, I don't know. An untagged image is just that, untagged, unknown. No matter what assumption you make, sRGB or the current display profile, you're going to be wrong sometimes.
> This is especially true of digital cameras
Images from digital cameras have a flag that's usually set to sRGB or Adobe RGB. That flag, although it's not a full profile, is treated like a profile. So images from a digital camera are matched to the display unless that flag has been specifically cleared.
If you want to verify this kind of thing it's useful to have an obviously wrong profile and insert that at various points in the pipeline. You can assign it to the display, or embed it into an image with normal data, or match an image with normal data to the wacky profile. You can search for a profile like this, try looking for "BGR" or "GBR", or you can use a hex editor to modify an existing profile for yourself. For instance, you can change the rXYZ chromaticity value by changing in the header the hex offset that signifies where in the profile the rXYZ data begins, you could point that to where the bXYZ data begins, and vice versa. Obviously you want to be careful using a hex editor so if you're not familiar with that kind of thing, don't do it. And you should only do that on a profile you have the right to modify.
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