As a brand new owner of this lens (inspired by awesome samples in the image showcase), I have some questions as I am starting to use the lens. Thanks to a lack of communication between my past and future selves, I actually am an owner of 2 separate MMF-3s. Is there any reason to choose one over the other for this lens? I noticed a little bit of play between the MMF-3 (both copies) and the lens. Is this normal? I have a feeling that the lens may be front focusing a little on distant objects. Is this possible? How can I test more? Should I be looking at micro-focus tuning? Regarding autofocus, I was unable to get the lens to focus on the moon last night. I was trying my usual technique of putting an autofocus area on the edge of the moon's disc. For some reason, the lens kept hunting, but could not focus. Any thoughts? E-M1 in M-mode, 1/8f, 1/500s, ISO 200. I would appreciate input from current users of this lens. Thanks.