Hi all I am seriously considering getting an E-M10 (returning to m43 after a year off!) and was wondering about this new kit lens. I usually dislike mechanical zoom but wanted to check first with users.. If you turn the camera off does it retract or keep its focal length? How about speed - can you zoom in and out and generally not miss shots? I'd hate for it to be slow. I had the 12-50 for a while and found it quite slow (in many regards!) What about battery life? how does it affect that? And if you have been used to a manual zoom - how was it to use this one? and any other hints as well would be useful. I will also get the Oly 25mm prime as my main lens but do want a kit lens that works. Many thanks for your time in answering!