On our recent shop trip to The Sea of Cortez, I left behind my trusty, but large, D800 Nauticam rig and decided to try a new mirrorless camera: The Sony a7 full-frame camera in a NA-A7 Nauticam housing. The Sony a7 (and a7r, a7s) are very impressive; the first full-frame camera in a mirrorless body! With it being much smaller and lighter than the D800, it was easy to carry around. Performance was very good, the camera is very comfortable and solid to shoot...