Stuffed the 400 in my backpack for the last game of the season of the Lacrosee team my son coaches. At 100 yards from spectator seating I was actually able to focus at f/11 stopped down (once I had exposure I didn't want to count clicks). Big, Big, bright viewfinder. IIRC this is the first viewfinder-focused shot I've had with this lens that was close to sharp (K-3 VF is just too dim). 60% crop with the upper left corner anchored. Cross-posted in sample Photos Archive
M Mode: 1/2000, f/11, 3200 ISO