Re: Monitor calibration software/hardware
Re: Monitor calibration software/hardware
- Subject: Re: Monitor calibration software/hardware
- From: Derrick Brown <email@hidden>
- Date: Fri, 21 Sep 2007 20:37:51 -0400
2. How can you use the same instrument to measure the accuracy of
itself and
the process?
Im not saying im using the same instrument to measure the accuracy of
itself. Ive never said that.
I have said, and still do, that users have nothing to start with.
They have a monitor and a computer. They make a calibration to some
target values they were either told about or read about. The
instrument with a set of known values can be used to investigate
display system performance. This is what the tool is for.
Now sure we have to "assume" the instrument is reasonable, (reason
number 1 we still ship DTP94s) and for the most part they all are.
Its not perfect but its way ahead of what they have, nothing. And
they sure dont have access to spectroradiometers to verify their
instrument.
These tools can tell the user that just because they can run a finite
black point on one display doesnt mean that value will work on all of
them. If they try, the validation tools can show that "monitor B"
will block up compared to "monitor A" in the shadows by running these
specific values. Or to find out in the color correction room that
running D50 on the new LCDs allows a brightness of 100cd/m2 next to
the CRTs that are now old but running D50 and can no longer achieve
the brightness without losing full black? Isnt that helping improve
the user experience? By using the same instrument, same software on
several machines you can baseline what your systems are doing.
These validations would all be with the same instruments so the
relative comparisons do apply here.
thanks
Derrick Brown
Integrated Color Corporation
81 Rogers Street
N. Billerica, MA 01862
tel: 978-670-1416
email@hidden
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