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Digital BW, The Print

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Re: [Digital BW] Densitometer or Spectrophotometer?

2003-04-02 by Robert Morrison

Sorry about that...if price is no option it shouldn't be a problem to use a
high-end spectrophotometer to measure 21 step wedges.  The specs of the unit
that you give below seem to be completely adequate.  My main concern was for
people on a budget...where the used densitometers seem to give much better
performance than the lower-end new spectrophotometers.

Robert


On 3/31/03 11:19 AM, "Dimitri Katsaros" <dcka@...> wrote:

> Yes, but if you recall, I did specify that you forget about price
> differences. So, the spectrophotometer I had in mind was the
> Spectrolino. Alternatively, the people at X-Rite suggested the 508,
> but the downside with the 508 is that it cannot be used with a
> monitor (to my knowledge) nor can I see a way for it to be fitted to
> a device similar to the spectroscan. OTOH, the 508 is slightly more
> accurate (0-2.0D +/-.005D and 2.0-2.5 +/-.010D).
> 
> Dimitri
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Robert Morrison
> <rmorrison@p...> wrote:
>> The problem with many of the pro-sumer level spectrophotometers is
> that they
>> don't have strong enough light sources to measure black patches
> with low
>> reflectance (high dmax).  As a result, several of us have found
> that these
>> devices are not good for readings above 1.6 or so.  This is a
> problem for
>> determining accurate shadows on many matte papers and causes
> considerable
>> problems if you plan to work with coatings or print on glossy or RC
> papers.
>> As such, buying a used professional densitometer, like the X-rite
> 810, which
>> several of us have, makes more sense for measuring step wedges for
> BW work.
>> 
>> Robert
>> 
>> 
>> On 3/30/03 9:28 PM, "Dimitri Katsaros" <dcka@y...> wrote:
>> 
>>> Hi all,
>>> 
>>> I was wondering if, forgetting for a moment about any
>>> price differences, a dedicated densitometer is, in
>>> general, any more accurate that using a
>>> spectrophotometer for measuring a 21-step wedge. I
>>> know that there are variances between models and
>>> brands, but I am also wondering if there would be any
>>> advantage in owning both.
>>> 
>>> Thank you
>>> Dimitri Katsaros
>>> 
>>> =====
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