Scanning question

[Glenna Rose]

I am scanning an entire page of album page of photos. Right now, for
speed (there are hundreds of pages!), I am leaving the cellophane or
plastic sheets in place and will come back later and scan the photos
with no covers.

With the scanner, first we do a preview and identify the area to be
scanned which may be only 25 percent or less of the scannable area of
the scanner bed.

My question is, if I scan the entire page of photos at the same time
and later divide those digitally, are the individual photos going to
have as high of resolution as if I scanned the photos individually?

If I scan a 2x4 photo at 3000 dpi as its own scan, will it have the
same finished resolution if I scan it as one of four and separate it
from those later with an editing program?

Because many of the old photos I am scanning, I will have access to
only once, I want the highest resolution possible with the scanner I
am using.

What say you?

Glenna

[Rory Bowman]

If scanned in a non-lossy format (TIFF) and then cropped, there is no
loss.
Lossless or not, resolution does not normally change.

If scanned and cropped in a lossy format (JPG) there is an increase in
"artifacting" or "jaggies."

Rory Bowman, Approve 71 team captain for Vancouver, Washington
bow...@pobox.com, (360) 666-7679, http://Approve71Vancouver.org
http://groups.google.com/group/approve71vancouver for volunteers

[Glenna Rose]

On Wed, Oct 28, 2009 at 6:31 AM, Rory Bowman <Mac...@macrory.com> wrote:
>
> If scanned in a non-lossy format (TIFF) and then cropped, there is no
> loss.
> Lossless or not, resolution does not normally change.
>
> If scanned and cropped in a lossy format (JPG) there is an increase in
> "artifacting" or "jaggies."

Thank you. I do all scanning in TIFF format and burn to CD so I will
always have the original file. That way I can do anything with it and
still have the best quality available.

The trainer at the Apple Store told me it wouldn't matter either but I
did want to verify it, especially considering my early digital photo
days I was told by some who were supposed to be knowledgeable that jpg
files were fine and didn't lose quality which was, of course, not
true. Sadly, I have many early digital photos that were compromised
because I didn't know better. Oh, well.

So, TIFF it is and I shall not worry how many are on the scanner bed.
The more at once, the less wear and tear on that poor scanner that is
getting the workout of its life!

Glenna

---<-@ Glenna Rose @->---

I cannot change the world, but I can make my little corner better.