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Digital BW, The Print

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Re: [Digital BW] slightly OT: developing expired B&W film

Re: [Digital BW] slightly OT: developing expired B&W film

2003-05-06 by Mark Savoia

It will get a base fog over time. If the film has been refrigerated, it 
will be much less. The film will also loose some speed so a lower ISO 
and possibly a little over development may be in order also. Test a roll 
first.

Mark

Doug I. wrote:

> Since I know there are many hardcore chemistry buffs on this list, just
> curious--what exactly goes "bad" with silver B&W film past its expiration
> date? And is there anything in general I should do in the development to
> compensate?
>
> TIA,
> Doug
>
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[Non-text portions of this message have been removed]

Plugin or procedure for dust removal based on selection?

2003-05-06 by Daniel Staver

Is there a plugin or procedure I could use to remove dust from a picture
based on a selection of the dust? I basically want to do the same thing
most scanners do in software based on the IR channel in an image. I use
vuescan with my FS4000US but the dust removal softens the image
noitcably, while if I scan the IR channel myself and adjust it in
photoshop I can get a good, clean selection that should enable me to
remove all the dust without any softening.

I've tried the dust & scratches filter, but it softens the image - I
want to maintain the grain structure. The polaroid dust and scratches
filter applied to the selection doesn't work that well either, it
doesn't remove enough dust, and when it does it also softens the grain
structure.

--
Daniel Staver
http://daniel.staver.no

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