- From: Simon St.Laurent <simonstl@simonstl.com>
- Date: 13 Nov 2001 20:24:53 -0500
- To: Chris Lilley <chris@w3.org>
- Cc: www-svg@w3.org
On Tue, 2001-11-13 at 17:08, Chris Lilley wrote: > > I'm trying to find a good way to deal with color printing of SVG > > images. SVG's RGB-centric approach is great for screen, but difficult > > for print. > > No, not at all. After all, its not 'just RGB'. Firstly, its calibrated > sRGB so it can be converted by a color management system to LAB and thus > to any other colorspace. Secondly, apart from filters, color clamping is > late as possible and thus, out of sRGB gamut values are preserved so > 'can print but can't view' colors can be accomodated. Thirdly, paint > properties allow an arbitrary ICC colorspace to be used (with an sRGB > fallback) so for example CMYK, Hexachrome, duotones or whatever you want > can be accomodated. Thanks, Chris, but let's slow down a little. These aren't SVG images I've created, and I don't have a lot of tools for processing them. I feel much like I did about ten years ago when I was working at a Manhattan Kinko's trying to make color photocopiers work. I don't have control over color space, don't have a clue what hexachrome is, and mostly know about color from long and traumatic experiences with Adobe Photoshop 3 and the joys of creating separations. The color information in SVG seems to suggest that sRGB magically solves everything, but are there any simple tools for working with sRGB - for instance, to approximate colors specified as RGB in forms that will work in CMYK? I'm looking at this through a very narrow window, not a full collection of powerful graphic tools. > Not that isn't 'generic CMYK' either, but a specific CMYK color profile > for a particular device, paper, ink set, dot gain etc and under a given > illuminant. I'll settle in this case for roughly tolerable CMYK as a circa 1994 color copier (Xerox or Canon, I don't mind) might produce. There's color management and then there's "wow! this banding in the gradients looks hideous" or "why exactly do you make your designers work under cheap fluorescent lights?" > > I'm aware of the rendering-intent attribute, but are there any tools > > designed to make the color issues any less painful? > > Color management systems in general make this less painful. Ensure that > you are using such a system and that you have profiles for sRGB, for > your screen, and for all the printers you intend to use. Is color management incorporated into any of the existing SVG toolkits? I know the Adobe SVG Viewer has some color management, but it doesn't seem oriented toward print, even relatively simple print. -- Simon St.Laurent "Every day, in every way, I'm getting better and better." - Emile Coue
Received on Tuesday, 13 November 2001 19:21:45 UTC