While the pros and cons sides look nearly even on paper, this lens is absolutely stellar in use. It\'s deadly sharp from f/2.8 all the way through till diffraction; the only need to stop down is to extend depth-of-field.
- Sharpness; both wide-open and stopped down - Close focus ability - Rendering quality - Zero distortion; well-controlled vignetting & lateral CAs - Very solid build - AF/MF clutch mechanism
- Noticeable coma & astigmatism wide-open; Noticeable spherochromatism wide-open; Slight focus-by-wire lag