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November 2007
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2007.12.09 16:04 "Re: dpi settings", by Toby Thain
On 9-Dec-07, at 1:58 PM, Bob Friesenhahn wrote: > On Mon, 10 Dec 2007, Graeme Gill wrote: >> >> Only that it seems to be echo'd in some applications (Photoshop >> comes to mind, although maybe more recent versions have addressed >> this), and I'm therefore wondering if it's generally understood in >> the U.S. that cm is not a preferred metric unit, and in practice >> seems to be falling out of popular usage in the rest of the world. > > Here in the US, the ruler that I have available is marked with > inches and centimeters. Are you saying that rulers in the rest of > the world are no longer marked with centimeters? If they are not > marked with centimeters, then what are they marked with? A ruler > marked with millimeters or meters would not be so convenient. > > It seems natural that centimeters was used since it is easiest to > measure the width and height of a computer screen or page-sized > object (e.g. sheet of paper) in centimeters rather than in meters > or millimeters. Also, for resolution units, the magnitude is convenient: - high resolution imagesetter 1000-2000 lines/cm - laser printer resolution 100-200 lines/cm - screen resolution ~30 lines/cm etc --Toby > > Bob > ====================================== > Bob Friesenhahn > bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/ > bfriesen/ > GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ > > _______________________________________________ > Tiff mailing list: Tiff@lists.maptools.org > http://lists.maptools.org/mailman/listinfo/tiff > http://www.remotesensing.org/libtiff/