Originally posted by Lowell Goudge Interesting comment.
I think this was on someone's wish list for software improvements, using perhaps selectible autofocus sensors to bracket between, or front to back of the scene focus bracketing
My comment on focusing bracketing is made with the modern viewfinder screens in mind. The older, a bit more dark ones, made for manual focusing, were better but they also don't suffice when it comes to determine the final DOF.
What I am talking about is the fact that when looking in the viewfinder the DOF appears as larger than it does when looking at the picture. As the DOF doesn't build up the same way in front of the focusing point as behind the focusing point it is often hard to foresee exactly what the DOF will be like. For macros, or as in the case with the microphone, you
may get a better picture if you focus just a bit in front, or in back, of the subject.
I don't have any camera with "digital preview" but I think this can be a good thing when there is plenty of time.
For some time i used a Minolta A2 which has a pretty good electronic viewfinder with realtime adjustments for exposure and colors and so on. It was to some help in cases like this. Let's see what happens in the future. For now we have free of charge developing and bracketing costs nothing but some time and thinking.
I am not interested in automatic focus bracketing. At the level AF works today it still would be to leave things to brainless decisions.
But it doesn't mean AF is useless. Sometimes one can use it just fine. The Winter Morning Eys in this thread here,
https://www.pentaxforums.com/forums/post-your-photos/3671-one-last-winter-morning-eyes.html
are taken with AF, and a not too large aperture opening.