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At 12:51 PM +0200 4/18/02, Ernst Dinkla wrote: >----- Original Message ----- >From: "byard pidgeon" <firstname.lastname@example.org> >To: <email@example.com> >Sent: Thursday, April 18, 2002 3:37 AM >Subject: Re: Sprintscan 120 issues/findings (comments welcomed) > > >> I wonder if all the problems people are having is because >they're expecting >> to be able to print 0 at one end and 255 at the other??? >> >> Most presses need about 4 percent at either end, and I've found >the same to >> be true with inkjet and other printers. >> Does it remap? Sure. Does it give a good print? Sure. > >With a custom profile for an RGB driven inkjet paper you'll get >quite far. >With a custom profile and inklimit settings for a CMYK RIP + an >inkjet you'll get quite far. >With a good printshop that has a similar colour management >workflow and sending them an RGB TIFF >with 0 to 255 in it one should expect the same. It is up to them >to do that work, they know their presses, papers and inks and the >dotgain that comes with it. > >Your 4 % will either be overruled by the printshops settings or >comes on top of that. The last means you loose 8 % over the >entire range possible. Sure, the printed image will not show any >blocking up in black or 'no dot' spots in white but it will be >compressed one way or another in that case. > >I have a colour book here with CMYK samples so one can check what >colour is printed by the actual CMYK figures. The publisher was >so wise to add the dotgain numbers + densities in the colofon. >Roland-MAN RFK3B 5 colour : Black: D 1.80, dotgain 13%, Cyan: D >1.25, dotgain 10%, Magenta D 1.20, dotgain 14 %, Yellow D 1.40, >dotgain 9 %. > >Your 4 % is far too general applied and not enough to get it >right for that press. >You must also hope that they see your applied limitation and >correct it. > >Ernst My experience is that printers can't hold much better than a 2% dot in the highlights...and lose it in the blacks for detail at about 96%. I think that is what Byard was referring to. Yes, there can be some blown out 0% specular highlights, but only within the interior of the image. Bill Agee -- b i l l a g e e s t u d i o c a p i s t r a n o b e a c h c a l i f o r n i a firstname.lastname@example.org http://www.redsilver.com - Turn off HTML mail features. Keep quoted material short. Use accurate subject lines. http://www.leben.com/lists for list instructions.