You know, I've been observing and thinking about the stuff I have shot with my Canon 10D, Canon 20D, Canon 1Ds Mkll and my Pentax K10D's and K20D's.
I JUST DON'T SEE ANY SIGNIFICANT DIFFERENCE BETWEEN ANY OF THEM WHEN PRINTED TO A LARGER THAN STANDARD MAGAZINE FORMAT!!! Perhaps color nuance and some grain differences when I shot at 400 or 800 iso.
I have been published with all of the above camera's. All of the magazine's I have been published in are very high grade Trendy Press book quality magazines. The output out of all of the above camera's were more than adequate for my needs.
My point is this. In terms of resolving power and for most support that most of us would imagine being published in, the Pentax K10D, K20D, K100D and K200D would suffice.
In fact my last shoot I did for "Spring Mag" with the K20D was over kill considering the size of the support i.e. about 8x10 inches. In fact I had to reduce the image size to get down to 300 dpi for Pre Press. I would have been quite comfortable with the K10D. The only grain I see when published with the K10D in double page landscape format is the "tram" grain of the printing of around 133 dpi.
Why do I bring all of this up...Pixel Peeping is totally a waste of time.
Go out and enjoy your toy and use it to express who and what you are.
That's All...
Ben