[Openicc] Drop size calibration

Hal V. Engel hvengel at astound.net
Sat Feb 2 15:32:58 PST 2008


On Saturday 02 February 2008 15:13:22 Robert Krawitz wrote:
>    From: "Hal V. Engel" <hvengel at astound.net>
>    Date: Sat, 2 Feb 2008 14:49:52 -0800
>
>    On Saturday 02 February 2008 05:50:27 Lars Tore Gustavsen wrote:
>    > On 2/2/08, Robert Krawitz > wrote:
>    > > The basic way I would do it in both cases would be to print a linear
>    > > sweep and try to find a best fit constant that would relate the two
>    > > curves, or at least the lower part of the curves before dot
>    > > gain/saturation issues started to come into play (particularly for
>    > > variable drops).
>    > >
>    > > Maybe I really do need a spectrometer...
>    >
>    > If so, there is a new rebate going on in US if you live there.
>    > http://xritephoto.com/html/i1Photo_LT_Rebate_Cert3.pdf
>    >
>    > Relatives in US picked up mine up last summer with an similar  rebate
>    > from this ebay seller:
>    > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150211241322
>    > In the ends it was around $500. In Norway a colorimeter from xrite are
>    > more than that.
>
>    One other possibility is to look for a discontinued but new device
>    on ebay.  I got my DTP20 uv on ebay for $220.  This device was new
>    old stock that was being purged from inventory.  So it includes the
>    one year warranty from X-Rite.  I also see lots of DTP41 meters on
>    ebay for reasonable prices although these seem to go for more than
>    the hand held devices like the DTP20 and you would likely want to
>    send it back to X-Rite to be recalibrated since any of these on
>    ebay will not be new.  However they are built like tanks and are
>    generally well cared for since they were very expensive,
>    approx. $2500, when new.
>
>    I occasionally see re-branded EyeOne Pros on ebay as well.  A few
>    weeks ago there was an EyeOne Pro that had HP labeling.  It was in
>    unused condition and included a bunch of accessories and software
>    and sold for $153.
>
> I need to find something that works with Linux; I don't have a Windows
> system and have no intention of getting one.  Getting the software to
> run under Wine would probably be a real hassle.

For sure you should get a device that is supported by the ArgyllCMS meter 
libraries.   In fact I would not consider anything else at this time. This 
would include the EyeOnes Pro,  DTP41 (including the DTP41B if you use the 
serial interface), DTP20, Spectrolino and some DTP22's.  As Alastair points 
out you probably should be looking for something that does both spot and 
strip reading.  So the EyeOne Pro, Spectrolino and the DTP20 would be good 
choices.  The EyeOne Pro and Spectrolino would also allow you to calibrate 
and profile your monitors.  The DTP20 is reflective only but has some unique 
features like the ability to do readings without being connected to a 
computer.

Hal


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