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Colour space for prints
Somewhere I read that for prints you use sRGB, because many printers use
sRGB. Then why do you need Adobe RGB, or are there printers which use AdobeRGB ? -- Alfred Molon ------------------------------ Olympus 50X0, 8080, E3X0, E4X0, E5X0 and E3 forum at http://tech.groups.yahoo.com/group/MyOlympus/ http://myolympus.org/ photo sharing site |
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Colour space for prints
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Colour space for prints
Alfred Molon wrote:
Somewhere I read that for prints you use sRGB, because many printers use sRGB. Then why do you need Adobe RGB, or are there printers which use AdobeRGB ? Yes, there are printers that have a wider gamut than sRGB, and some monitors do as well. There's a wider, newer space called ProPhoto RGB, as well. Printing at home with Photoshop managing the colors, you can use whatever space the photo is in, and the conversion will be to the specific printers drivers' capabilities. You may have read the advice to use sRGB for prints sent to the average service bureau, as that's what most expect, and lots don't know what to do with a different color space. -- john mcwilliams |
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Colour space for prints
In article , John
McWilliams says... You may have read the advice to use sRGB for prints sent to the average service bureau, as that's what most expect, and lots don't know what to do with a different color space. Well, even companies using high end printers and archival grade paper (Fuji Crystal Archive Pearl) now request sRGB. -- Alfred Molon ------------------------------ Olympus 50X0, 8080, E3X0, E4X0, E5X0 and E3 forum at http://tech.groups.yahoo.com/group/MyOlympus/ http://myolympus.org/ photo sharing site |
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Colour space for prints
John McWilliams wrote:
Alfred Molon wrote: Somewhere I read that for prints you use sRGB, because many printers use sRGB. Then why do you need Adobe RGB, or are there printers which use AdobeRGB ? Yes, there are printers that have a wider gamut than sRGB, and some monitors do as well. There's a wider, newer space called ProPhoto RGB, as well. Printing at home with Photoshop managing the colors, you can use whatever space the photo is in, and the conversion will be to the specific printers drivers' capabilities. You may have read the advice to use sRGB for prints sent to the average service bureau, as that's what most expect, and lots don't know what to do with a different color space. It's worth re-iterating that use of a wider colour space is only useful if your image has colours outside the 'less wide' spec and inside the wider one... And that no colour space has *more* colours - the colours are simply 'remapped' and spread out more so the steps between colours are greater. So that means if you are manipulating 8-bit images, you may well be adding new problems (eg posterisation) by using a wider space. As they say, if you aren't willing to deal with all this, or you are not quite sure about any aspects, just stay with sRGB. |
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Colour space for prints
"Alfred Molon" wrote in message
... Somewhere I read that for prints you use sRGB, because many printers use sRGB. Then why do you need Adobe RGB, or are there printers which use AdobeRGB ? As others have indicated, yes, some printers have a wider color space than sRGB. I would say, though, that for most consumer print services, sRGB would be fine, or as one person indicated, go ahead and leave it unmanaged, as such services won't care much one way or the other. I do notice, however that sending Adobe RGB files to Kodak Gallery results in muted, slightly brownish files. If one uses a "real" service, though, such as that offered by West Coast Imaging, or even Adorama Pix, custom color spaces are available depending on what paper you wish to print to. So, if I want to have something printed on Adorama's luster paper, I download and install the icm file, and use photoshop to convert it to that profile, and then send it off to adorama to have it printed. Is their color space narrower than Adobe RGB? I have no idea. Makes great prints, though, and they're inexpensive at that. I use West Coast Imaging for really big prints. |
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Colour space for prints
Mark Thomas wrote:
John McWilliams wrote: Alfred Molon wrote: Somewhere I read that for prints you use sRGB, because many printers use sRGB. Then why do you need Adobe RGB, or are there printers which use AdobeRGB ? Yes, there are printers that have a wider gamut than sRGB, and some monitors do as well. There's a wider, newer space called ProPhoto RGB, as well. Printing at home with Photoshop managing the colors, you can use whatever space the photo is in, and the conversion will be to the specific printers drivers' capabilities. You may have read the advice to use sRGB for prints sent to the average service bureau, as that's what most expect, and lots don't know what to do with a different color space. It's worth re-iterating that use of a wider colour space is only useful if your image has colours outside the 'less wide' spec and inside the wider one... And that no colour space has *more* colours - the colours are simply 'remapped' and spread out more so the steps between colours are greater. So that means if you are manipulating 8-bit images, you may well be adding new problems (eg posterisation) by using a wider space. As they say, if you aren't willing to deal with all this, or you are not quite sure about any aspects, just stay with sRGB. Actually, Mark T, some printers do have more colors (and colours) than others, if you say a wider gamut is "more color", which is not unreasonable. -- john mcwilliams |
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Colour space for prints
John McWilliams wrote:
Mark Thomas wrote: It's worth re-iterating that use of a wider colour space is only useful if your image has colours outside the 'less wide' spec and inside the wider one... And that no colour space has *more* colours - the colours are simply 'remapped' and spread out more so the steps between colours are greater. So that means if you are manipulating 8-bit images, you may well be adding new problems (eg posterisation) by using a wider space. As they say, if you aren't willing to deal with all this, or you are not quite sure about any aspects, just stay with sRGB. Actually, Mark T, some printers do have more colors (and colours) than others, if you say a wider gamut is "more color", which is not unreasonable. -- john mcwilliams Fair comment. I was referring to the commonly held (?) belief that there are numerically more colours in argb or pprgb, when in fact there are the same number, just spread out over a different range. So up until the image is rendered on a device that has those different colours, and unless you are aware of the 16- v 8-bit issues, it can be more problematic than useful. |
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