http://tinyurl.com/lqthcw5
锐利度:中央微胜，边角大胜O45
两镜不论接P机O机，对焦速度都是P42.5较快 / P42.5在GX7上快于在E-M1上
星芒丑，惨输O45
防手震补偿测起来只有三级
Summary
Good points
Sharp across the frame even at maximum aperture.
Close focusing distance allows respectable macros.
Very compact and light body. Lens hood supplied.
Optical stabilization reduces wobbles on Lumix bodies.
Bad points
Stabilisation provided modest compensation in my tests.
Starburst diffraction not as defined as Olympus 45mm.
Some fringing with bright point sources on Olympus bodies.
Many MFT owners will already have Olympus 45mm.