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

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

By: elizabeth

elizabeth — Wed, 01 Jul 2009 08:23:11 +0000

wonderfull, i feel like a genius because I understand but it is because it was explained so well. Is there a reply to the question posed by NickP? i live in France.

Oops, I let his question slip by… I’ve just gone an added my thoughts. —Jeffrey

By: coloring pages

coloring pages — Wed, 10 Sep 2008 18:15:49 +0000

Great article. I didn’t realize it was so complicated.

By: NickP

NickP — Sun, 03 Aug 2008 18:41:05 +0000

Excellent material -- I think I'm finally beginning to understand this stuff. Some related questions: 1) I've noticed that Lightroom 2.0 recommends that images are edited in Photoshop with ProPhoto RGB due to its larger gamut. I have my WorkSpace set at AdobeRGB (and I convert to sRGB for saving to Flickr with your excellent plugin - thanks!), and was wondering what the relative pros/cons are about setting my WorkSpace to ProPhotoRGB? Personally, I leave my workspace set to the native workspace of the image, to avoid color-space conversions. If I want to change it for some specific reason, understanding what happens with the conversion is part of the decision. 2) When your Lightroom 2.0 plugin exports to Flickr, I am assuming that it embeds the requested sRGB profile in the file -- is that assumption correct? and finally, Images exported from Lightroom have the appropriate profile appended, unless you explicitly strip it with something like my Metadata Wrangler plugin. 3) I have an xRite i1 colorimeter for my LCD monitor. For a while I used to set my Adobe Creative Suite WorkSpace to the i1 generated profile. But I'm now thinking that this is incorrect. I should be setting my WorkSpace to AdobeRGB or ProPhotoRGB, and the colorimeter automatically only affects my monitor profile so that it can correctly interpret the files I am using with Photoshop, Lightroom, etc. Is that right? That's correct. A monitor profile is used only for a monitor. sRGB, AdobeRGB, ProPhotoRGB, etc., are device-independent profiles. —Jeffrey Thanks so much for your excellent writing and work. Nick