RE: Colorimeter vs. Spectro
RE: Colorimeter vs. Spectro
- Subject: RE: Colorimeter vs. Spectro
- From: Marc Levine <email@hidden>
- Date: Tue, 04 Jan 2005 09:27:22 -0500
> The real question is whether the overlap is actually useful to
> a color scientist.
In hopes of providing some closure to this thread, I would say this. The
colorimeter and spectrophotometer have different missions in life. For a
spectro, the system is geared to deliver a discrete set of spectral points
that represent a color sample. Yes, I would agree that most spectophotmeters
do see the data that is in between those discrete points. However, because
the task is to report these discrete points, the data in between those
points can be heavily "discounted". After all, a system does need to handle
"noise", and needs to use some type of math filtering. In contrast to a
colorimeter, a spectro is not geared to filter light like the human eye -
only to capture/report these tiny spectral points. And yes, you might even
be able to tune a spectro to handle the red phenomenon that occurs when
measuring displays so that it works more like a colorimeter (and more like
the human eye). The tough part about having a combination device for both
display and print is that - if you "tune" it to yield a certain result with
displays, you may compromise the way it reads prints (and vice versa).
The colorimeter's mission is quantify color using the broad-band energy
levels of a color sample. There is far less parsing out of what's good and
what's bad about your data. In this type of case, if the filters are built
correctly (a HUGE point that was made earlier), a colorimeter has the
capability to capture color data that has even greater correlation to the
human eye than a spectro.
-Marc
--
Marc Levine
Sales Guy
Technical Guy
X-Rite Incorporated
Email email@hidden
www.xrite.com
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