09-25-2019, 09:51 AM
All the f/1.4 wideangles Klaus had tested in the Canon mount have 3 stops of vignetting (or more) wide open - the 35/1.4 L II was no exception. If we stick to the Lenstip measurements the 24/1.4 L II even had over 4 stops (Klaus found 3.3), so I'm not sure there's anything out of ordinary here. Ultrafast lenses vignette a lot wide open. Wide angle ones even more so.