Re: B&W Scanning
Re: B&W Scanning
- Subject: Re: B&W Scanning
- From: Mike Strickler <email@hidden>
- Date: Wed, 20 Jul 2005 12:57:38 -0700
And the Callier effect should not produce a color change.
On Jul 20, 2005, at 12:23 PM, Jeffrey Stevensen wrote:
I believe you will find Callier Effect only occurs with collimated
light passed through a silver emulsion. Diffuse light does not exhibit
Callier Effect. The effect on scanning would depend on the light
source type and optical system (if any) used to deliver the light to
the film.
Scanning B&W silver based film almost certainly does not come out
neutral,
because of the Callier effect - the scattering of light due to solid
grains
of silver. Conversion to grayscale, via standard conversion or channel
mixing is definitely required.
Mark Rice
Jeffrey Stevensen Photography
82 Gilman Street
Portland, ME 04102
207-773-5175
www.jsphotographs.com
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| >B&W Scanning (From: Jeffrey Stevensen <email@hidden>) |