lxmike
M2 fan.
Yes - the 28mm-e adapter has been out for a few years, and the 50mm-e one was just announced. Both keep the same f/2 as the native lens but are a little bulky.
I agree with the "rent first" comments. I found it was perfect for me, but you may find different.
Again wise words, l have never rented before, how does one go about it