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Daska H
Guest
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 Posted: Sun Jan 18, 2004 6:57 pm Post subject: Help please |
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What causes severe posterization problems on some negative
scans? Can't understand why I am getting it. Changing film type to
generic sometimes helps & long exposure pass also except for the
obvious time increase which is annoying when batch scanning. What
could be the reason?
Film Type Kodak 160NC.
Scanner = Coolscan 8000
Help greatly appreciated. |
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Bart van der Wolf
Guest
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| Posted: Sun Jan 18, 2004 7:05 pm Post subject: Re: Help please |
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"Daska H" <daska@thal.co.uk> wrote in message
news:62ac1f9d.0401180457.454735ed@posting.google.com...
| Quote: | What causes severe posterization problems on some negative
scans? Can't understand why I am getting it. Changing film type to
generic sometimes helps & long exposure pass also except for the
obvious time increase which is annoying when batch scanning. What
could be the reason?
Film Type Kodak 160NC.
Scanner = Coolscan 8000
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How does the histogram look? Does it smoothly cover the whole range from
dark to light, and no severe clipping at the ends? Do you work in 48/64 bit
mode?
It might help if you could post a link to an example crop.
Bart |
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Daska H
Guest
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| Posted: Mon Jan 19, 2004 4:51 am Post subject: Re: Help please |
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| Quote: |
How does the histogram look? Does it smoothly cover the whole range from
dark to light, and no severe clipping at the ends? Do you work in 48/64 bit
mode?
It might help if you could post a link to an example crop.
Bart
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Thanks for responding so promptly -
The histogram looks ok.
I wasn't working in 48/64 bit mode; but doing so makes no difference.
Image the same in Photoshop but printing relatively ok. Could this be
a monitor profile problem? I did calibrate my LCD monitor with
OptiCAL & set it as default monitor then directed Vuescan to it. |
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Daska H
Guest
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| Posted: Mon Jan 19, 2004 3:45 pm Post subject: Re: Help please |
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daska@thal.co.uk (Daska H) wrote in message news:<62ac1f9d.0401181451.26af7dcd@posting.google.com>...
| Quote: |
How does the histogram look? Does it smoothly cover the whole range from
dark to light, and no severe clipping at the ends? Do you work in 48/64 bit
mode?
It might help if you could post a link to an example crop.
Bart
Thanks for responding so promptly -
The histogram looks ok.
I wasn't working in 48/64 bit mode; but doing so makes no difference.
Image the same in Photoshop but printing relatively ok. Could this be
a monitor profile problem? I did calibrate my LCD monitor with
OptiCAL & set it as default monitor then directed Vuescan to it.
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Correction!!! - the print (in the cold light of day) is most certainly
not ok - not sure how to post a link to an example crop.
What settings could I have got wrong that would cause this problem?
As mentioned this seems to be happening on all types of film. Have
tried resetting to default, etc.
Am perplexed! |
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