Many pros probably set the camera to AF-C (Auto focus continuosly), so when you want to quickly focus on something, freeze the focus, and recompose a shot, the focus freeze button on the lens is a nifty way to do that.

The issue I had with both camera's and their kit lenses is that the focus was wildly inconsistent

Also, because it is native, maybe, the focus freeze button can be customized from the camera's menu.

It is very hard to get truly accurate manual focus

, so you don't get the same smooth focus-ring

Another benefit is the focusing

quality-Accurate focus-Nice out of focus areas - haven't seen the bokeh balls yet, but I like the way the background melts away and the subject is isolated-

The feature i'm missing is the eye auto focus with the zeiss on A7RII which can easily manageable with the flexible focus but is missing in a moving subject

Now it is not NEARLY as bad as the focus by wire manual focus on the f4 lens

The focus is very quick & fast

Fast auto focus.

The zoom is smooth and manual focus is easy to use.

Focus was fast and

Great focus and color but hefty

The focus is focus by wire but works with minimal delay/lag and the zoom ring is sufficiently damped to make zooming not too easy (it does not extend when upside down even without the zoom lock button being engaged).

Its such a smooth, fast and quick focusing lens

Now I have some manual focus Samyang/Rokinon lens that I use when I am doing specific manual focus work/macro work, so I can deal with this for the occasional manual focus with this lens, but still this is concerning

That lens’ focus was so horrendous as to be unusable

The f/4 did a pretty good