Re: The cheap EyeOne monitor cal good for professionals?
Re: The cheap EyeOne monitor cal good for professionals?
- Subject: Re: The cheap EyeOne monitor cal good for professionals?
- From: bruce fraser <email@hidden>
- Date: Sun, 11 May 2003 10:32:31 -0700
At 12:46 PM +0200 5/11/03, neil snape wrote:
on 11/05/2003 11:32, Boris Oicherman wrote :
Theoretically monitor colorimeters are suppose to do a better job
measuring monitors then affordable spectrophotometers. This is because
the spectral measure the monitors phosphors is very "spiky", and
spectrophotometer measuring with 10 nm steps have a good chance to
"miss" some of those spikes and output a wrong measurement.
Practically I've never did the one-2-one comparison, I'll appreciate if
somebody who did can share the results
Here's what I feel on the two instrument types;
Both are only as good as the software that drives them. Counting and
measuring the low frequency photons at black or near black leans towards the
colorimeter. The colorimeter has smooth or smoother response filter for what
the eye sees. The spectrophotometer has possibly a more accurate absolute
value reading. The colorimeter can do a better job consistently in many
situations where the monitors are less than optimum (resolution, refresh
rate etc). The colorimeter is solid state and quite robust , less expensive,
thus an advantage of portability.
I've done the comparison between the EyeOne Display and the EyeOne
Monitor. The spectro has always given me a calibration that clipped
the lowest black levels -- generally somewhere between 3 and 8
levels. With the colorimeter, I don't get any clipping on black.
I can't see any difference in the rendering of color. It would be
interesting to measure the difference between the predicted and
actual color produced by profiles created with the two instruments,
but I don't have a reference-grade instrument that could do so. If
anyone has a 2nm spectroradiometer, or even a Minolta CS-1000, lying
around, maybe they could measure a difference, but doing the
measurements with the instruments that made the calibrations wouldn't
tell us much.
Bruce
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