RE: streaks in scan

Jon,

How close were those peripherals to the scanner? I have an electric
pencil sharpener next to the scanner and it makes my computer screen
do a weird hula dance over a disctance of four feet. Of course I never
sharpen pencils while scanning;-}

Darryl

-----Original Message-----
From: Jon Lybrook [mailto:jon@terabear.com]
Sent: Tue 4/27/2004 2:16 PM
To: alt-photo-process-l@sask.usask.ca
Subject: Re: streaks in scan
 
Hi Sam,

Thanks for the tip, but I'm already scanning as a positive in 16bit
mode.

I can say that moving my palm pilot away from the scanner and turning
off my
LJIII tank of a printer that sits next to the scanner seems to have
minimized
the problem -- results comparable to doing a multi-pass scan. Must
have been
some kind of interference.

Jon

Sam Wang wrote:

> Jon,
>
> I had the same problen scanning negatives in the Epson 3200: streaks
and graininess in the thin areas.
> But the problem went away when I scanned it as POSITIVE, in 16 bit
mode, and inverted back in
> Photoshop.
>
> Give that a try.
>
> Sam Wang
>
>
>>From: Jon Lybrook <jon@terabear.com>
>>Date: 2004/04/26 Mon AM 10:46:29 EDT
>>To: epson4870@yahoogroups.com, alt-photo-process-l@sask.usask.ca
>>Subject: streaks in scan
>>
>>Hi All,
>>
>>I'm scanning a 4x5 transparency at 48bit on the Epson 4870 Pro using
SilverFast,
>>converting it to greyscale and am getting vertical streaks in the
file. The
>>streaks aren't noticeable until I apply an adjustment curve or
otherwise
>>brighten the image. I've managed to minimize them by doing a
multipass scan,
>>but they still exist. They are apparent in the file and on whatever
output
>>device I send them to, so I know it's not a printer problem.
>>
>>Is this ugly artifact in the subtle black areas simply to be
expected from the
>>flatbed scanners or is there something I'm doing wrong?
>>
>>Thanks,
>>Jon
>>
>>
>
>
>