Re: Dynamic Range testing
Re: Dynamic Range testing
- Subject: Re: Dynamic Range testing
- From: Robert Lyon <email@hidden>
- Date: Wed, 5 May 2004 10:29:02 -0400
On May 5, 2004, at 1:00 AM, email@hidden
wrote:
Why not scan a Stouffer Certified 21 Step Transparent Calibration
target
T2120CC? It's piece of black and white film that goes from .04d to
4.07d.
I recently utilized the Stouffer 21 step greyscale. It was very helpful
in comparing a number of high end scanners in terms of measuring there
maximum density. It was odd that none of the scanners tested came close
to their advertised claims in terms of max. density. I double checked
the scale on an accurately calibrated densitometer to verify its
claims.
Scanner manufacturers told me that they measure density a different
way, Can anyone shed some light on this?
Thanks, Bob
Bob Lyon
ColorPro LLC
33 Waverly Park Road
Branford, CT 06405
203 530-9929 voice
203 453-1208 fax
email@hidden
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