A super fast fifty millimetre lens can be a lot of fun. But arguably it’s not the best all around type of lens to have; it’ll be bigger and heavier than a more modest speed fifty, and likely not as good stopped down. It’s more of an occasional use specialty lens. So it makes sense not to spend vast sums for a Leica Noctilux. No-one makes a modern f1.2; and if and when they do it will no doubt be extremely expensive and very big and heavy. That makes the better legacy 50mm f1.2 lenses well worth investigating.
This review is of one of the better contenders: The OM Zuiko 50mm f1.2. It has a reputation for being usably sharp in the middle wide open, and sharpening up to decent overall performance stopped down. Does it live up to this reputation? Read on!
High resolution versions of the samples can be found at http://www.davidbraddonmitchell.com/Varia/Zuiko1250/