Okay, very quick shoot of a simple pattern. Note: it wasn't all that clear printed at "fine" on my inkjet. A look at the original PDF shows it wasn't all that great when I downloaded it. ::sigh:: No modifications have been done on the pix, other than a simple resize. All of them should still be at 300 dpi.
1st pic is at 16mm, f/3.5 from about a foot away. A bit overexposed.
2nd is, I think, the cleanest of the lot. Same distance, f/11. A touch dark maybe.
Then I backed up. . . I don't know. 30 feet? 300mm f/6.5. This seems to be the blurriest (Most blurred?).
Last shot, same distance. 300mm at f/11
All shot from a tripod, totally on manual. I did not use a remote release because, well. . . I was too lazy. The blur on the 3rd shot (which was actually the last shot I took) might be related to me pushing the button myself.
I've tried shooting the moon with this lens, too. Even at 300 with remote release, I find it a little soft. I had to play with this a little to get it this sharp. But again, it's not mission critical for me to get super sharp details in every shot.
This is just the beginning. I'll be able to test it a bit more in the next week or so.