Colour gamut at L:25 (darker)

For Amazon Check UK prices on Pricegrabber.co.uk Now we move to L:25, measuring the gamut that represents darker areas of a print. Once again, original UltraChrome registers a good wide gamut, but how does it compare?

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UltraChrome K3 definitely produces an improved gamut over original UltraChrome at L:25, but it's not as dramatic as Epson had implied. However, in fairness to Epson, their focus was on performance at the even darker L:10 level.

We found that there was practically nothing to measure at all at this level, but at L:12 UltraChrome K3 did show a clear superiority over original UltraChrome, though the High Gloss UltraChrome gamut at L:12 was also good. Back to L:25 and UltraChrome K3 shows increased area over original UltraChrome in the border between blue and green and between green and yellow, but it's not dramatic.

For Amazon Check UK prices on Pricegrabber.co.uk Check UK prices on Pricegrabber.com High Gloss UltraChrome in the R1800 shows good blue gamut, but at the expense of green and yellow. The red corner is good too.

For Amazon Check UK prices on Pricegrabber.co.uk Canon's dye-based inks lose out in the green, yellow and red regions of the gamut space at L:25, though blue and cyan are good.

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At last there is something good to say about HP's 8750 Vivera inks, with a particularly good blue performance signified by the 8750's use of an additional blue ink. This blue depth shows at darker levels like L:25 but not at the mid-range L:50 measurement. However, green and cyan are not that impressive, though red is. It's almost as if HP is only trying to fill the sRGB space, though its printer drivers now support Adobe RGB printing without conversion or printer profiling.