Re: Optical Density ? (grayscale sources)
Re: Optical Density ? (grayscale sources)
- Subject: Re: Optical Density ? (grayscale sources)
- From: Roger Breton <email@hidden>
- Date: Fri, 06 Sep 2002 13:04:40 -0400
>
For reflection scanning, it really doesn't matter if it's a silver scale or
>
carbon dye (if there is such a thing) since it essentially becomes a
>
"diffuse" density as opposed to transmission scanning. And of course, the
>
standard reflection scales can't produce much over a 2.2-2.4 density, if
>
that, so aren't really suited for testing dynamic range.
>
>
For you folks crazy (like me) about grayscales and targets in general,
>
here's a couple of links:
>
>
<http://www.stouffer.net>
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<http://www.tiffen.com/Kodak Professional Accessories catalog.pdf>
>
>
Later,
>
Terry
I got hold of a Stouffer "calibrated" tranmission target and it goes all the
way to 4.0, I believe.
I just never had the chance to put in on my scanner to gauge its dmax. But I
wonder whether that methodology would have any merit?
Regards,
Roger Breton
Laval, Canada
email@hidden
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