At 40mm, central sharpness is excellent from f/4 to f/8, very good at f/11, good at f/16 and fair at f/22. The edges are excellent from f/4 to f/8, very good at f/11, good at f/16 and fair at f/22.
Whilst offering a saving over the OM System f/2.8 lens, the new lens is on the more expensive side generally. After that, it, therefore, relies on its performance and IP53 sealing to justify its ...