STICKY:  Color problems? [work in progress?]

Thanks Rene, I learnt a lot.

Can someone explain why is this happening? I have read through the thread, and been playing around the settings and still cannot get it right. This is a comparison between Aperture and Firefox 3.5. First screenshot does not have on screen proofing on Aperture, the second screenshot does.
Onscreen proofing is set to sRGB so is the export profile.

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darkness2505 wrote in post #8236992
Can someone explain why is this happening? I have read through the thread, and been playing around the settings and still cannot get it right. This is a comparison between Aperture and Firefox 3.5. First screenshot does not have on screen proofing on Aperture, the second screenshot does.
Onscreen proofing is set to sRGB so is the export profile.

The image in FF remains the same.
The image in Aperture looks less saturated in the second screenshot (I'd expect the other way around, since your screen has a smaller gamut then sRGB). Both images look less saturated in Aperture.
Not sure what exactly "Onscreen proofing" does in Aperture, but if it's like softproofing in PS, and you're trying to simulate a non color managed application, you should choose your monitor profile. ("Seems good 2")

No idea why you would want to be proofing however, since both Safari and FF3 are color managed...

darkness2505 wrote in post #8236992
edit: On Safari, the colors are identical to Aperture. So I am guessing Firefox is the problem here?

FF3 has 3 settings for color management: Off (0), fully color managed (1), Only manage images with embedded profile (2) (which is the same as Safari)
Which is it set at? "0" I presume?

How to set it: Link

Here is a video featuring the Onscreen proofing: Link

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basman007 wrote in post #8250275
firefox 3.5:

FF 3.5 doesn't support V4 profiles. It also has a bug that causes it to not display right on wide gamut screens. I'd stick with 3.0.11 for now.
3.5.1 is supposed to fix both issues

basman007 wrote in post #8250275
- set the display resolution to a minimum of 1024x768

An LCD display is best run at native resolution.

basman007 wrote in post #8250275
I don't use DPP or other progs I have installed to edit pics, so does it matter that I haven't changed their settings? These progs won't interfere with PS, right?

Nope.

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Rene -

I just want to make sure that the easiest way to say convert adobergb to say srgb in photoshop is...

Edit > Convert to profile... Destination Space Profile: srgb....

I exported my 5DMarkII files in LR 2.4 to a PSD 8-bit adobergb.

I realize now that the lab I use has to have the profile in srgb.

would the method I just listed above be the best way to convert from adobe to srgb?

Thanks!

Yep. That's the way to do it. Note that you only have relative colorimetric intent, so be careful not to clip any colors...

thanks Rene!

one issue i've always had a problem with is this: in my raw converter, i adjust the image black level so that i can see detail in shadows. i can convert that image to jpg and embed the sRGB profile, but when viewing in non-color managed app like picture & fax viewer (windows), that detail is lost because the image is becoming darker.

Only real solution is to use color managed software.
If you want to use the image as a background / desktop image in XP (or it must look identical in P&FV and CM software (on your machine only)), convert to your monitor profile.

I tried that later - converting to my monitor's profile and it worked great. Never thought of that before. but generally i just make a copy of it and bring up the level of the shadows when i am going to post to web or send to other people who may or may not have color workflow.

thanks!

Be aware that converting to your monitor profile will only assure the image looks the same in Windows P&FV on your monitor.
It will help nothing for other peoples system, maybe make things worse. It'll certainly make things worse for people using FF3 with full color management, unless you embed the profile.

I am using Photoshop cs4 and have embedded the profile of adobeRGB and such, however the program i use to import my raw files (or convert them to be precise) is DPP and it doesn't allow me to change the preferences in there (due to not being compatible with Snow Leopard OSX yet) so it's stuck on sRGB.
I am wondering if i convert from RAW to TIFF16bit, with sRGB (as i have no choice) then use adobe in PS will this effect the colour greatly???
IF so is there another program i can use to export my files into TIFF so i can embed the colour profile AdobeRGB???
I am printing my work so i need, or prefer Adobe, of course.
Been scratching my head over this until Canon can fix the DPP
Thanks guys

When you convert the CR2 using sRGB, any colors outside sRGB will be lost. So converting to AdobeRGB only makes sense if you want to "add" color beyond sRGB, for instance by adding saturation.

If I read your post correctly, you cannot access the DPP prefs? Try here: