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Digital BW, The Print

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Re: [Digital BW] Banding on a scanner

Re: [Digital BW] Banding on a scanner

2003-11-30 by daschkenas@aol.com

I recently had some scans of 4x5 b&w negs made on a scitx eversmart flat bed scanner.
When i printed the image, there was slight banding only in smooth sky areas, about zone 3, not in the entire sky.
After good nozzle checks, and a cleaning, I re examined the image on the monitor, and I was shocked to see the banding on the monitor.  So it is a scan problem, rather than a print problem.
Has anyone experienced this?  Many scans were made from 4x5 b&w negs, and the slight banding only appears in certain density areas in the smooth cloudy skys.  There is no banding on 90% of the scans.
Any suggestions.
I'm printing on a 7600 UC ink, IP 5.5 sommerset velvet.

Thanks
David Aschkenas

Re[2]: [Digital BW] Banding on a scanner

2003-11-30 by Anthony G. Atkielski

daschkenas@... writes:

> Many scans were made from 4x5 b&w negs, and the slight
> banding only appears in certain density areas in
> the smooth cloudy skys.

You've checked the negatives themselves to rule out any banding on the
original film?

Re: Re[2]: [Digital BW] Banding on a scanner

2003-11-30 by Julio Fernandez

See my response to this issue.  These are Newton rings, the scanner is OK, the film warps doe to heat from the scanner. The rings do not affect the area close to where the film is supported in the film carrier since it is kept away from the glass bed at that point.
Julio Fernandez
Show quoted textHide quoted text
  ----- Original Message ----- 
  From: Anthony G. Atkielski 
  To: daschkenas@... 
  Sent: Sunday, November 30, 2003 11:14 AM
  Subject: Re[2]: [Digital BW] Banding on a scanner


  daschkenas@... writes:

  > Many scans were made from 4x5 b&w negs, and the slight
  > banding only appears in certain density areas in
  > the smooth cloudy skys.

  You've checked the negatives themselves to rule out any banding on the
  original film?



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[Non-text portions of this message have been removed]

Re: [Digital BW] Banding on a scanner

2003-11-30 by Julio Fernandez

See my other replies to this issue.
Julio Fernandez
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  ----- Original Message ----- 
  From: daschkenas@... 
  To: DigitalBlackandWhiteThePrint@yahoogroups.com 
  Sent: Sunday, November 30, 2003 11:12 AM
  Subject: Re: [Digital BW] Banding on a scanner


  I recently had some scans of 4x5 b&w negs made on a scitx eversmart flat bed scanner.
  When i printed the image, there was slight banding only in smooth sky areas, about zone 3, not in the entire sky.
  After good nozzle checks, and a cleaning, I re examined the image on the monitor, and I was shocked to see the banding on the monitor.  So it is a scan problem, rather than a print problem.
  Has anyone experienced this?  Many scans were made from 4x5 b&w negs, and the slight banding only appears in certain density areas in the smooth cloudy skys.  There is no banding on 90% of the scans.
  Any suggestions.
  I'm printing on a 7600 UC ink, IP 5.5 sommerset velvet.

  Thanks
  David Aschkenas

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  Please visit the Group Homepage to check the Files, Bookmarks, Polls and other resources as they are often being updated. The page is at:

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  Please follow these basic guidelines:
  - Include your full name with your message.
  - Include the address of your website, if you have one.
  - As threads develop, trim off excess portions of earlier messages to keep them short.
  - As the topic of a thread changes remember to change the subject header.
  - Good manners are required at all time. No personal attacks or flames
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  - Before posting a question, search the message archives and the various resources on the homepage. 




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[Non-text portions of this message have been removed]

Re: Banding on a scanner

2003-12-01 by cschaible94111

David:

I recently (last Monday, I think) posted a message entitled Weird 
Scanning Artifacts (or something similar) that I would be grateful if 
you would go back and have a look at to see if my problem is similar 
to yours.  What I have learned since then is that the problem (my 
version of it anyway) relates directly to (Tri-X) film grain.  That 
is, if I use the Nikon Scan GEM utility (which significantly alters 
the appearance of grain) the ultimate banding is greatly reduced.  
However, what GEM does to Tri-X grain is genuinely hideous.  Are you 
using Tri-X?  If you're having a similar problem with a different 
film, I'd like to hear about it.  

Thanks.

Chuck


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, daschkenas@a... 
wrote:
> I recently had some scans of 4x5 b&w negs made on a scitx eversmart 
flat bed scanner.
> When i printed the image, there was slight banding only in smooth 
sky areas, about zone 3, not in the entire sky.
> After good nozzle checks, and a cleaning, I re examined the image 
on the monitor, and I was shocked to see the banding on the monitor.  
So it is a scan problem, rather than a print problem.
> Has anyone experienced this?  Many scans were made from 4x5 b&w 
negs, and the slight banding only appears in certain density areas in 
the smooth cloudy skys.  There is no banding on 90% of the scans.
Show quoted textHide quoted text
> Any suggestions.
> I'm printing on a 7600 UC ink, IP 5.5 sommerset velvet.
> 
> Thanks
> David Aschkenas

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