Yeah, I should have clarified the following:
-I first tested the lens using the focus test chart found at
focustestchart.com
and found that my lens is best when focus adjusted to -1. Not bad, compared to some numbers I've read.
-All shots were taken at ISO 200
-All ahots were taken at 2.8
-All shots were taken with the 2 sec. self timer
-All shots were processed in lightroom, but only for white balance and to turn sharpness all the way down (to avoid confusion from artifical sharpening)
-To the best of my abilities, the back of the camera was parallel to the newspaper, but
-the newspaper was nowhere near as flat as I'd have liked.
I won't get around to another test for a few days, but I'll post it when I do.