[argyllcms] Re: Few questions about spectrophotometers
- From: Ridouan Agarad <ridouan@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Mon, 16 Jan 2012 13:57:49 +0100
On 16-01-2012 13:33, ???? ???? wrote:
Hi everyone
1. Can I measure spectro of ambient light using ColoMunki (not just
its chromaticity)?
2. For ambient light measurement I need rev. D of i1 device?
3. In general, i1 without UV filter is better for colour management
purposes and it more versatile?
4. And most important question: how bad second-hand i1 or Spectrolino
device from ebay?It strongly need recertification? Or recertification
is not so needed, in general?
Thanks for attention
Hi,
1. There are 2 types of ColorMunki: the colorimeter (ColorMunki Display
and the older ColorMunki Create) and the spectrophotometer variant
(ColorMunki Design and ColorMunki Photo). See also their website for
more info: www.colormunki.com <http://www.colormunki.com/>
You'll need the spectrophotometer if you want to measure spectrum.
2. AFAIK with the D variant an ambient head measurement thingy is
supplied. I don't have a A or B, so I can't check that, but on
argyllcms' site it's also mentioned
(http://www.argyllcms.com/doc/instruments.html#i1p)
3. I take it you mean the i1Pro device? In that case: there have been
numerous (too much to count really!) discussions on the net on which one
to buy. It basically comes down to 'buy the non-UV' i1Pro, unless you
actually know you will really need the UV-cut version. It's something
along the lines of "you'll know it when you need to have it"...
4. Usually it's a judgment call (is it a demo version, did the previous
owner take good care of it, etc. etc. etc.) and it helps if you have
another device against which you can verify its accuracy. It also
depends on what you plan to do with it. As an extreme example: if you
plan to just measure ambient light with it, I guess extreme
accuracy/certification won't be on the top of your list. On the other
hand, if you plan to profile TV's, printers, etc. you cannot use a
device that is in an unknown state. Unless the certification of the
device has not expired yet, but even then: you don't know whether the
previous owner liked to bang the device against the wall every day... So
in short, if I were in your shoes and I would buy a (previously
'thoroughly' used) 2ndhand device I'd certainly recertify it.
Good luck!
Kind regards,
ridouan.
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