I was testing out my D810 some more indoors just shooting photos of my 2 year old daughter. I had my 85 1.8 G mounted and was having a little bit of a difficult time acquiring focus lock using the AF points even those located in the center columns. I was in AF-S mode and single AF point selected. This was under normal household incandescent lighting. I am only bringing this up because I was a little surprised at this since I've never, ever had this issue with the 5D3. At first I was using the outer points to compose, but it wouldn't lock at all so I figured I would use the center columns which has the cross type points. Same thing. It would either not lock at all or would take forever to lock. So this forced me to look into the various AF options. Haha. (Just didn't have the time since I've gotten the D810 last week!)
I shuffled through the various non-automatic settings and was thinking about a few things:
-For AF-S, should I set it for release priority or focus priority? Seems like release priority will allow me to get the shot regardless of focus lock or not. Of course focus priority would probably give me the best results. What are you folks using?
-For AF-C, pretty much the same question. Release then Focus priority?
-For AF-C, I find that the expanded points (8 points surrounding the selected AF points) really work well to the point where I'm thinking about just using AF-C all the time. I use the AF-On button so I can still stop AF when I want to.
-For AF-S, I see something similar, except it's the surrounding 4 points. However, the selected AF point doesn't light up red. Does that mean it's not active and only the ones above, below, to the left and right are active?
Thoughts? Comments?