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[filmscanners] RE: Bands while using Vuescan


  • To: lexa@www.lexa.ru
  • Subject: [filmscanners] RE: Bands while using Vuescan
  • From: "Nagaraj, Ramesh" <Ramesh.Nagaraj@ca.com>
  • Date: Mon, 5 Aug 2002 12:07:57 -0400
  • Unsubscribe: mailto:listserver@halftone.co.uk

Yes, we are talking about same type of banding. In this week, I will put those 
images on an FTP server and let you know.
In my Vescan output, RED color bands are more clearly visible.
I am using the s/w that came with the scanner, do not know the version. You can 
get the latest s/w from the minolta site.
Earlier I was reluctant to explore minolta s/w and had always ignored it. But 
now I am forced use Minolta s/w,
It has options to select Color space, Monitor device RGB, these option are 
hidden!!!. Another thing is minolta s/w will not embedd the
color profile into image.

(ANOTHER ISSUE)
Another problem which I faced few times was, that I used to get full RED 
images(no other thing except RED).
During the scanning process, Vuescan shows Pre-processed image and 
post-processed image in the s/w. Pre-processed
image used to look fine but final file written to harddisk used to be washed 
with RED. Seems there is some thing wrong in the preprocessing.

Thanks
Ramesh

-----Original Message-----
From: al@greenspace.freeserve.co.uk
[mailto:al@greenspace.freeserve.co.uk]
Sent: Sunday, August 04, 2002 6:22 PM
To: Nagaraj, Ramesh
Subject: [filmscanners] Re: Bands while using Vuescan


When I tested the Elite II I tried it on my PC (PII 350 with 896 Mb of RAM 
running
Windows 98) and on a borrowed laptop (PIII 600 with 128Mb RAM running Windows 
2000) and
the results using the Minolta software (version 1.0.0 I think) scanned at the 
full
resolution of 2820 dpi with ICE switched off were identical.

I wonder whether we are discussing the same sort of banding in the red channel. 
 I posted
a couple of examples, comparing the results with the earlier version of the 
scanner:

http://mysite.freeserve.com/filmscanners/elite_vs_eliteII.jpg
(Crop of full frame for reference and full resolution extract from each scanner 
- 470KB)

http://mysite.freeserve.com/filmscanners/elite_vs_eliteII_channels.jpg
(Separate channels of full resolution extract from each scanner - 307KB)

If this is the sort of banding you are seeing in Vuescan, then I think you may 
be right
that Minolta have partly fixed the problem in the software.  What version of 
the Minolta
software are you using?



Al Bond



> This link has some comments with reference to " Vuescan & Minolta h/w & 
>Bands...."
> The writer says its due to speed & virtual memory.
>
> http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=000kAv  (Look for last 
>comment)
>
>
> Ramesh
>
> -----Original Message-----
> From: al@greenspace.freeserve.co.uk
> [mailto:al@greenspace.freeserve.co.uk]
> Sent: Thursday, August 01, 2002 6:48 PM
> To: Nagaraj, Ramesh
> Subject: [filmscanners] Re: Bands while using Vuescan
>
>
> Ramesh wrote:
>
> >  I have heard lot of people saying "Minolta Dimage Elite II" causes bands. 
>I too
> >  observed the follwing.
> >
> > a) Causes clear red bands in DARK part of the slide scan.
>
> I tried 2 Elites IIs in January/February and both units exhibited this.
>
> >   * While using Vuescan. But ****NOT*** in Minolta software.
>
> <snip>
>
> > *Is it the problem with Vuescan or Minolta h/w. H/W seems to be ok, beacuse 
>bands
> appear
> > only with DICE. Without DICE there are no bands.
>
>
> Odd.  I found it happened both with Vuescan AND the Minolta software with or 
>without ICE
> turned on so my conclusion was that it was the hardware!  The only way I 
>found to the stop
> the banding with the Minolta software was to switch GEM on.  Of course, this 
>didn't
> actually stop the banding but the smoothing effect of GEM masked it.  (If I 
>slowly
> increased the GEM value from the lowest value of 1, the visibility of the 
>banding
> decreased correspondingly.)
>
> Was GEM definitely switched off when the you got band-free scans?
>
>
>
> Al Bond
>
>
> 
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