The problem with many of the prosummer 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@...> 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 > > ===== > Quiquid latine dictum sit altum viditur > > __________________________________________________ > Do you Yahoo!? > Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop! > http://platinum.yahoo.com > > > Please visit the Group Homepage to check the Files, Bookmarks, Polls and other > resources as they are often being updated. The page is at: > > http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint > > If you wish to receive no emails or just a daily digest, or you wish to > unsubscribe, please edit your Membership preferences by visiting this same > page. > > Please follow these basic guidelines: > - Include your full name with your message. > - Include the address of your website, if you have one. > - As threads develop, trim off excess portions of earlier messages to keep > them short. > - As the topic of a thread changes remember to change the subject header. > - Good manners are required at all time. No personal attacks or > &amp;quot;flames.&amp;quot; > - Complete your Yahoo profile. > - Before posting a question, search the message archives and the various > resources on the homepage. > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > >
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Re: [Digital BW] Densitometer or Spectrophotometer?
2003-03-31 by Robert Morrison
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