DxOmark published the list of best scoring primes (Click here) and best zooms (Click here) for the Olympus E-M1II.
The three best primes:
Olympus 75mm f/1.8 at [shopcountry 64683].
Panasonic 42,5mm f/1.2 at [shopcountry 64684].
Sigma 30mm f/1.4 at [shopcountry 64685].
The three best zoom lenses:
Olympus 12-40mm f/2.8 at [shopcountry 64686].
Panasonic 12-35mm f/2.8 at [shopcountry 64687].
Panasonic 35-100mm f/2.8 at [shopcountry 64688].
