24mm f2 AI/AIS (on Canon!)
Anyone have experience with this guy? I've had two of them, both trashed by a previous owner (starting to see why) and it's one problematic little lens.
I have a pre-AI 28mm f2 that I really like, but I also want the 24mm focal length, in theory.
Resolution is quite good, but there's a lot of spherical aberration wide open, which only disappears by f4 or f5.6 when contrast improves.
The blue/red CA is bad.
The curvature of field is nuts at all f-stops.
The bokeh is ugly, even on APS-C. Unusual for an old Nikkor.
This leads me to wonder if the problem is that I'm using this lens with a Nikon/Canon adapter with miscalibrated infinity focus, since it has a floating element. But my 28mm f2 K (which is a lovely lens wide open) has one, too, and...it performs very well.
It's usable wide open, maybe more than I can say about the old 35mm f1.4 (which is much better by f2), but this is not a great lens at any stop. Is this lens just kind of a dud or would it work well if the flange distance were correct? Thanks!