Subscriber and Workshop Member
Yes and yes. Wide open is gorgeous, but hard to get sharp. With careful focusing, it is sharp from f/5.6 to f/11, with very slight softening to f/16. Quite remarkable. Wide open is a bit lower contrast, but it still out resolves my (admittedly not very high density) sensor.Nice one, Matt. N = 1 for me, but I found the 250 SA to be a bit softer (in a nice way) when shooting at close distance. And those pentagonal bokeh elements are a dead give-away! Have you tried shooting wide open to see how they render? A little focus stacking, perhaps?
EDIT: Still waking up and re-read your post - did you actually score a 350 Tele-Superachromat?!? Dante says "attaboy!"