My EX1R fell about 4 feet onto the ground. It seems to work okay, but I'm wondering if it's possible that the alignment was knocked out of whack - perhaps causing a bit of blurriness?

Or maybe I'm looking at the image more critically than I did before - and imagining a less than perfect focus?

any thoughts?

Take it in to an authorized repair shop and have it checked out. It fell 4 feet. Hell I've fallen 4 feet and had to go to the doctor so why not take a delicate electronic instrument in to get a check up.
Just sayin'.

I recently had a similar drop of only 2 1/2 feet, but it was onto carpet. Re-do a backfocus just in case. F1.9 is where you'll always see blurriness so I recommend trying to reach F2.8 to avoid that.