Rob,
In my first life here at Polaroid I am the film recorder expert. My gut says
a film recorder might have some problems.
1- all film recorder specs are in addressable resolution not resolvable
resolution. Polaroid makes film recorders that sell from $4000 - $1900, all
of them image 4096 pixels but there is a significant difference in
sharpness, particularly edge sharpness, as you go up the line. The other
thing film recorders are not particularly good at doing black on white
particularly when the white is the majority of the image. The edges soften.
Thanks
David
-----Original Message-----
From: Rob Geraghty [mailto:[EMAIL PROTECTED]]
Sent: Monday, September 25, 2000 6:36 AM
To: [EMAIL PROTECTED]
Subject: Re: Measuring resolution (was Re: Real resolution of a 4000 dpi
scanner?)
> There is a company in Rochester NY called, I think, Advanced Imaging. They
> do these types of targets and are the supplier to Edmunds Scientific.
Thanks, David. I'll note that for later reference. I was suggesting the
use of the
film recorder since I have access to one and while it might not give a
scientifically
accurate result, it should be cheap and reproducible. It at least gives me
the
means to get a USAF resolution target onto film so it can be used to test a
film scanner without involving lenses and optics of a 35mm camera.
Regards,
Rob
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