"The original Panasonic Lumix G 20mm f1.7 ASPH was one of the most prized lenses for both Panasonic and Olympus users and the announcement of a revamped model with the same optical construction was a surprise.
In reality, the Panasonic Lumix G 20mm f1.7 II ASPH performs very slightly differently to the original. It’s still an excellent lens, but it’s not quite the performer of it illustrious forebear.
Compared to its predecessor the new lens should perform similarly, but we measured some slight variation in optical quality. The new model has a slight loss of sharpness in the corners and edges over the previous iteration. Sharpness in the outer field doesn’t quite match the original even when stopped down."
DxOmark review
November 07, 2013
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