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josel
Joined: 19 Aug 2005
Posts: 127
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 Posted: Thu Jan 19, 2006 11:44 am Post subject: sRGB Or Adobe RGB |
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Hi all,
I have noticed each time i load a image it is sRGB, when i go to EDIT> ASSIGN PROFILE. It is always on sRGB, when i then choose from the list to adobe RGB it brings in more tones and looks over saturated.
So is sRGB better to work with or Adobe RGB if you are looking for better picture qulaity?
And what does the one below do EDIT> CONVERT TO PROFILE. What is the difference to the one above?
And finally how to you set the one you want as default?
Kind Regards Josel |
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cbadland
Joined: 19 Jan 2005
Posts: 962
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| Posted: Thu Jan 19, 2006 12:15 pm Post subject: |
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Don't ASSIGN PROFILE to an image that is already tagged. If you want to edit an sRGB file in a larger color-space, go to CONVERT PROFILE. You won't see a change (you are not supposed to.) But now when editing the image, you'll have access to a wider range of colors.
If you only work on web-bound images, stick with sRGB. For print: capture and edit in AdobeRGB.
Color Management is tricky, and lots of schools of thought on various methods. |
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swanseamale47
Joined: 23 Nov 2004
Posts: 1478
Location: Swansea UK
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| Posted: Thu Jan 19, 2006 12:36 pm Post subject: |
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cbadland
Joined: 19 Jan 2005
Posts: 962
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| Posted: Thu Jan 19, 2006 1:01 pm Post subject: |
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Tagging an image is like describing its RGB “language.” For example- you see the word “once” in a book. Now if this book you are reading is tagged English, you know the meaning word is “one time”. However if the book is tagged Spanish, you would understand that word to mean “eleven.”
So if you CONVERT profiles, you retain the MEANING (color) but change its RGB numbers. If you ASSIGN a profile, you may change its intent, but you’ll keep RGB numbers. So if I CONVERT the word “once” that is tagged Spanish to a profile of English, the WORD (ie RGB numbers) would change to “eleven”, and its original meaning retained.
The only time you would ASSIGN a profile, is when you get an untagged, uncolor managed file (mystery meat) and you have to guess its intended color. So, I get a paper with the word “once”. Is it English? Spanish? Portuguese? Don’t know. Assigning a profile would be like saying… well I think “once” is English, so I’ll tag it that so others I send it to will know its meaning.
Confused yet?  |
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josel
Joined: 19 Aug 2005
Posts: 127
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| Posted: Thu Jan 19, 2006 3:16 pm Post subject: |
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Hi cbadland,
I think i understand, to do you assign rgb from srgb or convert it, which is the best option for quality? and why is photoshop set to srgb and not rgb in the profile sttings?
Cheers josel |
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cbadland
Joined: 19 Jan 2005
Posts: 962
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| Posted: Thu Jan 19, 2006 3:44 pm Post subject: |
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If most of your work is going to web, stick with sRGB. If you are going to photo or photo-quality inkjet print, maybe better to work in AdobeRGB. (Both these are Document Profiles, "RGB" is the color mode. Different things.)
DON”T ASSIGN. That will change your color in an unwanted way.
If you CONVERT sRGB to AdobeRGB, all that does is allow you access to a broader color range as you edit the pic. It doesn’t automatically make it any better. Best to capture in AdobeRGB or RAW (many “pro-sumer” digital cameras now have those capture choices).
Back to the language analogy: if I were writing a story about snow, it might prefer to write in the Inuit language since Eskimos have 412 words for different types of snow. (yes , I'm making that number up... but you get the idea.) However if I just took the sentence “Let it snow!” and translated into Inuit, it wouldn’t automatically make it any more descriptive. |
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