I jumped directly from a DS to a K10D. I read that K100 and K110 are
slightly better than the DS in terms of color accuracy and JPEG quality. I
have done extremely well with my DS. I thought the DS has everything I need
until I started using the K10D.

Color accuracy is significantly better than the DS. I used to use a grey
card to get the color correct, which is no big deal. But the K10D got it
correct right out of the box. In order to get the best out of DS, I shot
only RAW. JPEGs from K10D are head and shoulder better than DS RAW. I don't
have a good raw converter for K10D, so I can't say much about K10D RAW.

Mirror and shutter combo is softer and less vibration on the K10D than DS,
perhaps because of the increase in weight. It is a good thing. The lay out
of control is the best I have seen from Pentax. I had a 5n, ist, DS before,
I think Pentax looked at the best features and combination from all these
cameras and applied them to the K10D. It is just a pleasure to use it.

I don't think you can go wrong with a K10D. It is in fact competing with
Nikon D200 and not D80. It is therefore an increduble deal if you look at it
that way. And the D200 does not have SR that benefits every lens.

I've tried using several scanners and none of them worked well.
I don't want to cut up the books just to copy them.  I was thinking
of mounting the camera on a copy stand.

The anti-shake in the body was the big one. That's a great
feature to me and I assume it would also work for all the
old lenses.

Thanks. I'll look for prices on that adaptor. Shouldn't be too much.

Right. That's what I was thinking also.  From some of the reviews I've
read on the K10D it is comparable to the Nikon D200. So I could look
at it as saving $700. ;-)

The K10D seems to be on the cutting edge of technology right now. I
don't think I would have to worry about it being outdated anytime
soon.

Thanks for the input.

I believe the original poster has screw-mount lenses, not K-mount, so
metering is pretty much painless (albeit stop-down not full-aperture).

Right and that wouldn't be a deal breaker for me. If it doesn't do
low-light shots well, that would be a deal breaker.

Yes, that was my thought also. The anti-shake isn't just horizontal
and vertical but also diagonal.

That's hard to say at this juncture. I've been away from photography
for a while now. Just using a 3.1 mp point-and-shoot camera.  I hate
the shutter lag and the zoom on it is worthless.

I want a camera that will give me lots of detail. I can always take
out detail but I can't add it.

Thanks. I will check out the forums. I'm sure the D10K isn't perfect,
but then no DSLR is.