Comments on: Digital-Image Color Spaces, Page 1: Introduction

By: victor

victor — Fri, 23 Mar 2012 15:10:05 +0000

Hi, would it be that we have to set our DSLR camera at sRGB and NOT Adobe

It’s best to set it to raw. —Jeffrey

By: brunauto

brunauto — Sun, 05 Feb 2012 19:40:20 +0000

Oh, I didn’t saw that the ICC profile is at the bottom of the page and must be extended to be seen.
Actually on a photo directly edited in jpg by DPP, it is written that Z009 is the device model (?) and near the the bottom of the block there is “Profile Description” > sRGB v1.31 (Canon).
But at the top of this block, above the data, it is written “A profile by Canon that claims to be an sRGB color profile, but is actually slightly different.”
It is less clear to me… :-\

I don’t recall what was different about it (and silly of me for not keeping track of it), but it’s likely something not particularly important. Try comparing it with a different sRGB profile to see what’s different, I guess. —Jeffrey

By: brunauto

brunauto — Sun, 05 Feb 2012 12:25:40 +0000

Hi! I just discover your blog through your “exif viewer” page and I just realise that I may have some color profile problems in my workflow… The software that I use to convert my tiff files to jpg does not keep image color profile in the final file, and the most strange is that even when I convert directly a raw file in jpg with Canon DPP (with the “include icc profile” box checked) , exif viewer tells me :
“WARNING: Embedded color profile: “Z009”
Some popular web browsers ignore embedded color profiles, meaning users of those browsers will see the wrong colors for this image.
STRANGE: The embedded color profile differs from the metadata tags (sRGB (EXIF:ColorSpace)).”
notice that sRGB is really the profile configured in my camera settings and DPP default settings…

How can I understand that?

Thanks for your very interesting blog and beautiful photos!

By: biaib

biaib — Wed, 22 Jun 2011 15:09:04 +0000

the link to the icc color profile is broken

Yikes, not sure how that happened. Thanks for the heads up. Fixed. —Jeffrey

By: Justin

Justin — Wed, 08 Dec 2010 08:16:50 +0000

Answers. Flash sites can be coded to display sRGB ICC profile correctly on colour managed browsers such as safari without effecting browsers such as internet explorer which do not colour manage.

You need flash site built with actionscript 3 for flash player 10. Then add following to beginning of site and it will correct colour managed browsers, even on wide gamut monitors:

“if (stage.colorCorrectionSupport == ColorCorrectionSupport.DEFAULT_ON || stage.colorCorrectionSupport == ColorCorrectionSupport.DEFAULT_OFF) stage.colorCorrection = ColorCorrection.ON;”

Explained in more detail here:
http://www.adobe.com/devnet/flash/quickstart/color_correction_as3.html

Hope this helps!

By: Amanda

Amanda — Wed, 03 Nov 2010 05:30:11 +0000

This is brilliant. Thank you so much. I have had a huge headache over color management that is slowly abating as I read this wonderful series of articles. Bless you.

Amanda in SoCal

By: Justin

Justin — Fri, 08 Oct 2010 16:53:54 +0000

Much appreciated Jeffrey, curiously billy-kidd.com flash website doesn’t have this colour problem? I do not believe it is an intranet site. Having gone through forums for the last two days, torture BTW, the only thing I can find is that CS5 states it can now embed IIC profiles. However, it doesn’t explain what this feature is and whether this will resolve this issue. If I find out I will let you know!

Thank you
Justin

By: Justin

Justin — Fri, 08 Oct 2010 07:40:14 +0000

Yes, I thought that might be the case with applying the monitors profile. And I’ve seen posts on various forums advising to strip all colour profiles.

I ask as I would like to replace my HTML site with a new Flash site. Is there is no way to get the same colour accuracy with Flash as with HTML? I just seems so crazy?

Last I paid attention (a few years ago), Flash was not colormanged, so that’s just one more in a long list of reasons why Flash is not appropriate for internet web sites. (Intranet sites, where one entity controls all content consumers, is quite a different beast). I own stock in Adobe so it’d be great for my pocketbook if everyone flocked to Flash, but as a user I despise it on Internet sites. —Jeffrey

By: Justin

Justin — Fri, 08 Oct 2010 07:20:10 +0000

Fantastic explanation, thank you. Maybe you can help me with a problem I am having. My HTML website displays sRGB images correctly on my calibrated wide gamut monitor. This I believe is because the ICC profile is embedded in the image telling Safari to display it in sRGB. But, with flash the ICC profile doesn’t seem to be attached to the image and so Safari doesn’t know what to do and tries to display it with it’s default setting ~ the monitors ICC profile. In this case on my wide gamut monitor which has a much larger colour space resulting in the image in Safari looking overly saturated in red.

Do you know a way around this?

I read saving your images in your calibrated monitors profile is a work around?

Does Flash CS5 embed ICC profile now? Would that resolve this?

Last I heard Flash has no color management. Saving images with your monitor’s profile square-pegged as a device-independent profile will work perfectly for everyone on earth that’s exactly you, but no one else. Only way I know of to get a color-managed browser to match up images in HTML and Flash are to strip all color profiles from the images, because Flash treats them that way, and so the result ends up being random, but equally random for all situations. —Jeffrey

By: Lars Ekdahl

Lars Ekdahl — Wed, 16 Dec 2009 09:56:04 +0000

The problem is that Windows browsers are as color-clueless as they come. To my surprise even the new Internet Explore 8 does not recognize imbedded profiles. They simply throw the raw RGB numbers at the screen with no interpretation. Most monitors have a color range that is somewhere in the vicinity of sRGB. There have been several discussions in different forums regarding color management for web images. You can find some comment on http://www.ekdahl.org/kurs/colormanage.htm