Re: How can I get the dpi up there to the my scanner's maximum ability?

On Thu, 27 Apr 2006 14:29:33 GMT, "Rich Hollenbeck"
<richard.hollenbeck@xxxxxxxxxxx> wrote:

I have a VERY old family photo that I would like to touch-up in Photoshop.
In order to do that, I'd like to scan it the maximum resoultion. I can
always reduce the resolution later if necessary. I haven't been able to
scan it at anything higher than 420 dpi. Every time I try to go higher the
scanner does its thing but when it is finished no image is produced.

Hardware:
Epson Perfection 4490 with Digital ICE technology
Sony VAIO Windows XP Home Edition machine
512 MB total physical memory
197.98 MB available physical memory
1.57 GB total virtual memory
and 1.10 GB available virtual memory

The original image is about 4''x6'' and it is in sepia, or brownish and
white.

How can I get the dpi up there to the my scanner's maximum ability?


There's really not much point to scanning photographs
at much beyond 300 dpi. They need to be exceptionally
sharp and well-printed to warrant more than that.

As for image size. Even at 600 dpi, a scan of a 4x6"
print will be 2400 x 3600 pixels. That's 8.64 million pixels,
which is a TIFF of around 26 million pixels.

From your description above, I see no reason why that
might fail on your machine. You have enough memory.

Though you didn't mention how much free space is
left on your hard drive, it's rare that that by itself would
be your problem.

Where exactly is the scan failing and what, if any,
error messages appear? Which application is
failing? The scanner driver? The image editor?

Do you get an image file at all? Or do you get a file
that's empty (ie., all-white or all-black)?

Are you using the Epson driver in standalone mode or
by TWAIN or WIA?

If you're scanning with DICE, be aware that the
Epson driver will make two passes over the
original, and may **seeem** to be misbehaving
during the scan.


rafe b
www.terrapinphoto.com
.

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