articles/Paper/canvasoptions-page6
by Mike McNamee Published 01/08/2004
The average error for a 24 swatch Macbeth Chart is shown for the Lab and DE2000 units. For comparison the normal range for contract proof standard (4-7 in Lab units) is shown as a marked out rectangle.Most skin tones are better than this standard.
With the warmer cream of many of the papers the skin tone quality is slightly enhanced. The gamut volume is an absolute measure of how many colours a given media can support. Putting the Hahnemuhle Semi Gloss to one side, the gamut volumes of the canvas medias averaged around 450,000.This compares to an average for art paper materials (11 papers from the same mill) of 500,000 and high values reaching 700,000 to 800,000 for high gloss paper materials. Do not fall into the trap of thinking that 450,000 is only half as good as 800,000 - it does not quite work like that. However it does provide an objective measure of gamut size. The Hahnemuhle Semi Gloss occupied pole position on its own at 600,000.
The gamut volume is a measure of the number and breadth of colour a material is capable of delivering with a particular ink - see notes in text
Overall the colour precision for canvas averaged around 4 to 5, which is inferior to the 3.5 averages for art papers and around 3.0 for quality gloss and satin papers. The record values that we have measured are around 2.5 for a satin paper. Hahnemuhle Semi Gloss stood out above all other materials and got very close to the error values achieved by the best gloss/satin papers and better than many.
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