Latest Review Posted | MIR MC 20mm F3.5 I have this lens in Nikon F-Mount (unfortunately), but it's still a wonderful lens for landscape and architecture. My copy costed only $70, due to an inoperable iris, which has been repaired.
The central sharpness is excellent, it's even very good wide open. The corners are soft and do not improve much as you stop down.
The main "Con" is how challenging it is to find filters for the lens, due to the 77mm filter thread and 96-degree angle of view.
Also, as others have stated; it does handle like a WW2 Tank.
If you overcome the limitations of this lens, you really can do a lot with it.
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