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Joe,
        This is going to sound prefuntory, but it is brief.
        Photo-metrics, light-measuring.

        An image can be defined as an array of pixels, while exch element of
the CCD array by which an image is captured IS a photometer - a light
intensity measuring device.

        One can do both precision imaging and precision photometry with
devices made by Dage or by Hamamatsu (Begging the pardon of the many other
manufacturers I failed to include in this list, none of which, including
Dage or Hamamatsu, are related to me!)

For less perfuntory brevity, please recommend: Inoue and Spring, Video
Microscopy, 2d Ed.

Hope this helps,

Fred Monson
Frederick C. Monson, PhD
Center for Advanced Scientific Imaging
West Chester University of Pennsylvania
Geology/Asronomy
Schmucker II Science Center, SS024
South Church Street & Rosedale Avenue
West Chester, PA, 19383
Phone:  610-738-0437
FAX:  610-738-0437
eMail:  [log in to unmask]
CASI:  HTTP://darwin.wcupa.edu/CASI/
Directions:  http://www.wcupa.edu/_visitors/




-----Original Message-----
From: Joe Shope [mailto:[log in to unmask]]
Sent: Thursday, October 03, 2002 4:59 PM
To: [log in to unmask]
Subject: imaging vs. photometry


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A colleague of mine asked the difference between standard imaging
systems and photometry systems. Can anyone give a concise answer of the
differences between the two?

Thanks,
Joe Shope

Joe Shope
Confocal Technician
Microscopy Facility
Utah State University
Logan, Utah

(435) 797-0866
(435) 797-1575 FAX
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