Careful. That is what got me to switch from Nikon to Sony. For several years I toted the Nikon (D610) around Europe. When daughter got married in the Canary Islands, I borrowed a friend's original a7 for the trip. Size difference while retaining FF was amazing, and photo quality was great despite the kit lens (and some Nikon glass I used with an adapter). Even the official wedding photographer who came from Argentina a used a Sony a99, plus the second shooter with a D800 were intrigued when I showed up with the 'new mirrorless' camera.