Comparison of 2 spectros using Delta e
Comparison of 2 spectros using Delta e
- Subject: Comparison of 2 spectros using Delta e
- From: david wollmann <email@hidden>
- Date: Fri, 14 Jan 2011 12:02:11 -0700
Hello everybody,
I've been doing an exercise here comparing two different instruments,
an i1Pro and a DTP41. Both devices have the UV filter. I made a target
of the it8 basic chart since I can fit all the patches in the area of
an 8x10 inch print. I then printed both at the same time on some 24
inch wide fine art paper using an Epson 9800.
The Delta E 94 values are
Total - 1.63
Best 90% - 1.50
Worst 10% - 2.81
The worst 10% are mainly in the cyans and a few light yellows and one
green patch.
I guess my question is what all can learn from this? Since this is
only a comparison between two devices with no standard reference how
would I determine which spectrophotometer is giving me more accurate
readings?
My subjective evaluation, passed on the screen representation of the
lighter tone patches, is that the i1 is "cleaner."
Thanks for your thoughts,
David Wollmann
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