[argyllcms] Re: Number of patches - well behaved printer?

  • From: edmund ronald <edmundronald@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Wed, 23 Feb 2011 00:57:00 +0100


 I wasn't asking you, who are a specialist doing proofing; I was
asking the OP who appears to be a photographer doing fine art work.
 I'm not trawling: I believe fine art guys don't exactly need 1 dE
matches and a drydown time of an hour or so will do them ok.
 The same remark obtains regarding the CM software - I have no
particular love for it, but from all I've heard it's perfectly ok for
fine art inkjet work.
 Your remarks are certainly all correct, but as you point out yourself
they concern proofing rather than the OP.

On Wed, Feb 23, 2011 at 12:17 AM, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote:
> edmund ronald wrote:
> Hello Edmund. On the bold assumption that you are being sincere, and
> aren't simply trawling, I'll respond:
>> Why d'you bother with such long drying times?
>> An hour seems fine to me,
> Because it makes a difference with most media & ink combinations.
> If the aim is for the print to be correct after 24 hours, then
> it's safer to make the measurements after 24 hours. (Some of
> us have been through the exercise of actually measuring this. Print
> a small chart, and then measure it at intervals. Plot the delta
> E against time. Pick a time when the remaining delta E is small enough.
> It's not often one finds a combination that is stable after 10 minutes.)
>> and the native Color Monkey software itself
>> is probably more than good enough.
> That very much depends on ones requirements. The supplied color munki
> software may well be satisfactory for casual or home enthusiast use,
> if you are lucky. By "lucky" I mean that any profile that depends on
> so few measurements makes many assumptions about the behaviour of
> the device it is modelling. If your device happens to behave like
> their model, you will get a good profile. If your device doesn't
> match the model somewhere in it's gamut, you get a bad fitting
> profile. The only way to get a good fitting profile for any device
> is to measure it closely, leaving smaller gaps to be filled by
> the model assumptions. So for critical use such as proofing,
> measuring a lot of points (1000 - 5000) can and does make a difference.
> Graeme Gill.

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