Another example of a great lens and camera combo is the 75 f1.8 and an EM1.

Which EM1? Does not really matter. The benefit of an EM1 with this lens is it is really fast, accurate and smooth to focus. My 75 has been a little twitchy on most of my older or lesser cameras. Almost perfect performance is very occasionally disappointing with mild hunting or locking onto an out of focus point and refusing to shift. Very occasional, but not ignorable. On an EM1, performance is faultless.

The advantage of focus accuracy with this lens comes from its wide open performance. At f1.8 it is basically as sharpas a lens needs to be, but this is wasted of course if you have to trust to luck focussing wise.

With a grip-less EM1 the combo is also very small and comfortable, considering its relative strength.