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Re: Scanner suggestion for small organization?

Hi Arthur,

Indeed, I did not specify the usage of the scanner:

We will use it for website images, and for our museum database.  If we need
high resolution slide scanning, I will take care of it myself.

Your description of slide scanning sounds dreadful...

I might suggest our board to get a simple flat bed for now, and invest in a
film scanner when we have the funds.


Francoise Frigola
IAHS Computer & Research Chair

Original Inkjet Prints in Multiple ~ Sculpture

----- Original Message -----
From: "Arthur Entlich" <artistic-1@shaw.ca>
To: <scan@leben.com>
Sent: Sunday, May 12, 2002 12:25 AM
Subject: Re: Scanner suggestion for small organization?

> Hi Francoise,
> Within your budget range, you will have to make some compromises.
> The reflective art, (paper, photos, newspapers, magazines, etc) are easy
> these days with any 600 dpi optical scanner for even under $100
> The problem is the film, both negs and slides.  I assume most of these
> will be 35mm, and that makes it even harder to deal with.
> One thing you don't mention is what you plan to do with the scans.  WIll
> they be on a web site? Printed with an inkjet, printed in a catalogue?
> The minimum resolution you need for a full screen computer image from a
> 35mm frame is about 1200 dpi optical.  Of course, 2400 dpi is even
> better, for printing purposes from 35mm film.  This means you need a
> flatbed scanner with a transmissive light source. (light hood).
> The main problem is that flatbed scanners, in general, are designed with
> reflective art in mind which rarely requires more than a dynamic range
> of 2.6 dMAX.  Film needs 3.8 or more.  So, you will need to be happy
> with lower dynamic range in cheaper flatbeds.  This means underexposed
> images will be very noisy and even darker areas of slides will be noisy
> or inaccessible.
> Microtek, Epson, and Umax all make good scanners in this range.  Try to
> get a CCD sensor rather than CIS, not only is this older technology
> better, it is cheaper and lasts longer.  If you can test the scanner
> with different media, that would be best since each model tends to have
> different abilities and specs alone will not tell the full story.
> Art

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