So, they released a firmware update a couple months back for the 5N. I just got around to downloading and installing it this evening. It is supposed to help with autofocus and a few other things. I've had a few issues with the autofocus, so I decided to update. It hasn't been terrible, but could be faster, and that is what I've heard it does. Anyway, here is the link if you own one too. I'll update if there is a significant difference to tell you about.