Hey, recently I've been playing around with Nikon AF modes but there are some that got me confused.
At the lower front, there is 3 dials; Continuos, Single and Manual. My question is regarding the Continuous and Single Mode.
To my understanding there is 3 modes; single AF, dynamic AF and the full box which I dont understand what it means.
The problem is, when in Continuous Mode and Dynamic AF, when I focus lock the subject, as the subject move. The camera did follow but as soon as I press the shutter, the camera will snap the part where the AF point is placed. I don't really understand what is going on cause in 51AF with 3D Tracking, I can see the AF points follow the subject.
Your question isn't too clear to me...
The front focus control buttons have the follwoing functions:
(C) Continuous Servo mode, when the shutter button is half-pressed, the camera will continue to adjust focus with its current focus point settings.
(S) Single Servo mode, when the shutter button is half-pressed, the camera will focus once with its current focus point settings.
(M) Manual mode, the user must focus the camera lens themselves.
The rear focus area settings have the following functions:
The big white box lets the camera try to determine what's in focus by itself using any of the AF sensors it chooses.
The small box with four dots ("crosshair" mode) allows the user to choose a focus point and the camera to adjust that point to follow action.
The small box by itself allows the user to choose the focus point.
These work in combination with the other AF settings:
a1- AF-C priority - this setting affects when you're in C mode:
Release- take a picture when the user presses the shutter button
Focus- take a picture when the AF module determines the subject is in sharp focus
Release+Focus- take a picture when the AF module determines the subject is probably in focus
a3- 51 points and 3d tracking:
Allows the camera to use all AF points, but only works in crosshair mode with AF-C.
If you're in AF-C with crosshair mode, then the camera starts with the assumption that where you have the AF point when you half-press the shutter button is the part of the subject you want to keep in focus, and it adjusts focus as the camera and subject move to keep that in focus until you hit the shutter, at which point it will take the picture, adjust focus a bit and take the picture or adjust focus a lot and take the picture depending on the priority.
Now, the caveat is that the D300 has a slower processor than say the D3- so with some moving subjects it's possible to overwhelm the CPU if you try to have the camera do too much, which is why you can switch down to a lower number of AF points and control the AF point selection yourself.