Canon 35mm/f1.4L in infrared
I just started trying out the Canon EF 35mm/f1.4L in infrared with the EOS 5D-IR and can report that it’s excellent, excepting some corner softness, which is also typical in color (the “L” zooms outperform it in the corners, and the corner softness is quite consistent with its MTF chart). Here’s a snapshot, and an actual-pixels crop:
Full Frame | Actual-pixels crop |