articles/Paper/Paper-Chase-PermaJet-Smooth-Pearl280-page2
by Mike McNamee Published 01/02/2014
Summary data from PermaJet Smooth Pearl.
Colour Audit
Although there is no need to do so, we bespoke profiled both surfaces and then audited the output. Gratifyingly the new PermaJet product out-performed the Ilford on 29 of the 30 parameters we normally table, indeed the overall error, at 1.84ΔE₀₀ was one of the lowest that we have measured. Thus the PermaJet performed flawlessly - by way of example the errors in chroma and hue were nine hundredths of a percentage point where a difference of 1% is the visual detection limit!
Overall then a top-notch performance. We also tested results printed at PermaJet using the same profile and set-up. The difference between the two prints averaged a little over 1.5 Lab points, in other words, near-identical response. The gamut volumes of our bespoke profiles were close, the PermaJet was an insignificant 1% smaller. The metamerism of the PermaJet media was lower than Ilford although both recorded low values. The Dmaxes were identical.
Summary data from Ilford Smooth Pearl. In almost every parameter the PermaJet product is out-performing the Ilford.
Parameter | Weight sgm | Caliper microns | Dmax Colour | Dmax ABW | CII | Avg Error ΔE00 | Gamut Lab3 units |
Permajet | 280 | 270 | 2.31 | 2.56 | 1.17 | 2.94 | 1,056,786 |
Ilford | 290 | 290 | 2.36 | NR | 1.41 | 1.83 | 1,069,034 |
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