The Sony A7 II: The Unofficial Quintessential Guide

at the time I write this, if you mount a non–E-mount lens using an adapter, Continuous AF will not function at 5 fps; you must drop down to 2.5 fps to use it. In addition, neither Expand Flexible Spot nor Zone AF area modes will work with an adapted lens, nor Eye AF and Lock-On AF modes.

Fixed Zone. Center Lock-On AF always uses the center of the frame to lock onto a subject. Lock-On AF can be set for any of the available focus area options, including Wide, Zone, Center, Flexible Spot, and Expand Flexible Spot. Available in Movie Mode. Center Lock-On AF, unlike Lock-On AF, can be used in Movie mode.

These two menu items let you choose whether or not to apply noise reduction to exposures of longer than one second and how much noise reduction to apply (Normal or Low) when shooting at a high ISO level (at roughly ISO 1600 and above).

Note: you can’t specify a minimum shutter speed with the a7 II.