Starting with the extravagant Nikkor 50/1.2 :
Nikor 50/1.2 AI @ f/1.2. Vignetting left "as is". The vignetting of the AI version is less than the AIS (the latter shows more "clipped corner" effect).
The recent Sigma 24/1.4 "A"
@ f/8
f/8.0
f/4
... and wide open
wide open, here too
Pretty good background blur, wide open, while retaining good sharpness in the focus plane, even off center.
f/11. About everything gets sharp.
