Re: i1Profiler optimize from ColorPort data?
Re: i1Profiler optimize from ColorPort data?
- Subject: Re: i1Profiler optimize from ColorPort data?
- From: Walker Blackwell <email@hidden>
- Date: Tue, 14 Jun 2011 12:59:48 -0400
On Jun 14, 2011, at 12:42 PM, Neil Snape wrote:
> The optimisation routines are really for very small patch sets <450 or so. From my testing if you do optimise a say > 1700 you degrade quality.
Yes. I understand this. And I have also seen noise problems with high-patch CMYK sets and the eye one with no optimize.
>
> The best profiles so far have always been a reasonable patch set no optimisation. Anything from 700-2500 patches has worked out famously. Neil Snape
Have you validated this with epson brown and neutral axis in i1Profiler? My validation of 1258 patch CMYK and then 350 patch optimization was that Neutral axis, neutral noise, and near neutrals were much more accurate (and less noise) than just 1258 patch set and no optimize. I have not validated this against a higher patch (say 2500 or 3500) non optimized profile but in my experience of building other high-patch profiles for epson printers using epson LUTs or dithers is that higher patch profiles degrade and add noise. Have you seen that very problem on 3rd and 4th generation epsons? There are so many variables at play it is hard to be totally empirical in testing.
Walker _______________________________________________
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