[filmscanners] RE: understanding contaminated blacks--SS4000--newbietype question

["" <snsok@swbell.net>]

Here is a small area from one of the transparency scans.

www.tallgrassimages.com/test

The blacks in this scan are muddy and specked with brown.

Stan

-----Original Message-----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Pat Cullinan, jr.
Sent: Saturday, September 07, 2002 6:55 PM
To: snsok@swbell.net
Subject: [filmscanners] Re: understanding contaminated
blacks--SS4000--newbietype question


Stan,

Can you post an image somewhere on the web?  Or send me an image (not
too big) at
pcullinan@mindspring.com?

Regards,

Pat Cullinan, Jr.

snsok@swbell.net wrote:

>When scanning high contrast Velvia transparencies, I am seeing detail loss
>in the shadows along with areas that just look muddy brown. I understand
>what causes detail loss from shadows with high contrast films but I am
>unclear what causes the muddy appearance. When I view the image at 100%
>level in PS, I see areas of brown pixels speckled through the blackest
>areas.
>
>I can't magnify the actual transparency enough to see at that level. Is
what
>I am seeing due to noise being introduced into the darkest areas? Is it due
>to the contrast range of the transparency exceeding the capabilities of my
>scanner? Is this due to the dust on the mirror causing noise artifact in
>areas it's most apparent?
>
>Is there anything I can do with Photoshop to remove some of this?
>
>Stan Schwartz
>
>
>
>
>



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