(no subject)
(no subject)
- Subject: (no subject)
- From: Jeffrey Stevensen <email@hidden>
- Date: Mon, 3 Jan 2005 12:07:05 -0500
RE: iphoto colormanaged?
Peter,
sRGB is a gamma 2.2 profile. Colormatch is gamma 1.8. I haven't worked with iphoto, but it seems from your description that either (1) iphoto is not color managed, or (2) you do not have iphoto set up to recognize the profiles attached to your photos. Check the documentation.
I had similar problems with viewing images on my Mac with color-managed and color-ignorant software. It is due to a conflict between the gamma embedded in the profile of the image when it is optimized (looking good, correctly exposed) and the native system. An image with an embedded profile (whether 2.2, 1.8 or whatever) will view properly on a Mac or PC in a color managed software application, but with no color management the native gamma assumption takes over. Thus the 2.2 gamma image appears too light on a Mac without color management. An image optimized for a 1.8 gamma (Mac without color management) will look too dark on a 2.2 gamma system (Windows) without color management.
You can make your own flavor of Colormatch; I did. In Photoshop Color Settings, first select Colormatch as the RGB workspace. Then go to custom RGB and the settings for Colormatch will load. Change the gamma to 2.2 and save the resultant settings as Colormatch 2.2 and make a colorsync profile of it. Now you can use, convert to, or assign this profile to your images.
THE FOLLOWING IS A KLUDGE: In many cases, ASSIGNING Colormatch 2.2 to a digital camera sRGB image can result in improvements in saturation and skin tone without going "over the top." ASSIGNING standard Colormatch will result in images looking too light. ASSIGNINGA Adobe RGB will push the RGB end points so far away from sRGB that the image will gain too much saturation and skin tones will be too intensely red.
BETTER: start working with raw files and Adobe Camera Raw! You will get much greater dynamic range and color accuracy out of your digital camera.
<x-tad-bigger>Jeffrey Stevensen Photography
82 Gilman St.
Portland, ME 040102
207.773.5175
email@hidden
www.jsphotographs.com
</x-tad-bigger> _______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden