RE: Colorimeters and third-party developer support
RE: Colorimeters and third-party developer support
- Subject: RE: Colorimeters and third-party developer support
- From: Roger Breton <email@hidden>
- Date: Mon, 22 Aug 2011 06:09:26 -0400
Bob,
> I haven't got one of these monitors, so I can't be sure, but I would be
surprised if you can't use your i1pro spectro or an i1 Display with
> the free iMatch?
I've done that, with good success.
> But if you want hardware calibration, then you have to use software
customised to the hardware. If I want hardware calibration of my
> Eizo's, I have to use Eizo's software or Basiccolor with a limited number
of colorimeters/spectros. But I knew that before I bought
> them.
Your statement seems to imply that "hardware calibration" is inherently
superior? I say, that depends on a lot of factors. Some
instruments/monitor/software combination work wonders but not others, even
though they're all using hardware calibration. That has been my humble,
hard-earned experience.
> Didn't HP publish details, or didn't you read them? I just found and read
Eizo's white paper on its built-in calibrator, since I was
> interested in purchasing a monitor with one.
Eizo has to be praised for the amount of technical information they make
available to the public. And they make good monitors too. But HP? Very hard
to come by. One quickly exhaust the amount of information they make
available to the public.
> That is probably the future, instead of messing about dangling lumps of
plastic/metal on
> the front of monitors, and then running various programs to control them.
I think a case can be made for that approach, yes. Again, would you
blindfully trust the results that would come from such procedure?
> The built-in calibrator even recalibrates your monitor at
> night on a schedule, while your computer is off - all automatically!
Why not. Absolutely. One has to leave the monitor on all night though? Or
has Eizo also added capabilities to wake the monitor up 1/2 hr in advance of
calibration to let it warm up?
> But as Karl Lang pointed out, a cheap colorimeter, customised to the
specific primaries of the monitor can out-perform GP
> colorimeters and rival the $10-20,000 lab colorimeters (like the Discus?)
and spectroradiometers:-
That's an interesting claim, isn't it? I mean, what, any off the shelf,
cheap diode has the potential to calibrate any emissive devices?
On its own? Fully traceable to some independent standard? And provide a
stable solution over time? Of course this is a perfectly workable
calibration scheme, if you have the technical means to establish the base
"calibration" of this inexpensive device. I once had my CS-100 calibrated to
a CS-1000 to within less than 1%. Worked wonder on the monitor it was
calibrated for. But I couldn't use it on any other monitor nor could I use
it today, after 3 years because they primaries have drifted.
> "I have worked with colorimeters that cost less than $100 to build that
rival the accuracy of a $20,000 spectroradiometer when used on
> the display they were designed for. That same spectroradiometer could not
provide any measurement of black on the display. The
> $100 colorimeter could measure black with a high degree of accuracy." -
> http://www.lumita.com/site_media/work/whitepapers/files/xrite-wp-3a.pdf
Come on? A cheap, off the shelf diode? Can achieve less noise in dark
measurements than all the Peltier-cooled super sensitive spectroradiometers
out there?
> Methinks you protest too much. You think I defend too much. C'est la vie!
Methinks you read too much into these white papers ;-)
Roger
From: "Richard Wagner" <email@hidden>
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