I am getting the E-M1 II and will have my old E-M1 as a backup body. But now my wife is going to use the E-M1 and she needs a standard range zoom for it (not a prime). I have three choices: 1. Buy the new 12-100 so she can use my 12-40. Would be quite nice but expensive. 2. Buy a second hand 12-40, so I have two. Wonderful lens but to have two of them seems crazy? 3. My question - what other standard M43 zoom lenses are there?