Now, if I press the joystick IN when I don’t have BB-focus pressed (or just flick the joystick left and right to switch eyes), the box turns into an almost a double-edged box, which I’m assuming means “tracking,” but I don’t understand why; what’s the difference?
Double-box means you've intentionally selected the "subject" in the center of the frame to track for AF by pressing joystick. It does not activate any type of AF, ONE SHOT or SERVO.
And then if I press the joystick IN again, the double-box goes back to a single box; what does that mean?
Anytime you press again with double-box active, you turn off the double-box and reset the system unless you also have an identifyable eye, when eye-detect AF is on, or face, when face detect AF is on. In that case, the system goes back to tracking an eye or face automatically with the single-box instead. You can think of single box as automatic subject selection and double box as intentional (manual) subject selection.
Whenever you see the left white arrow with a right white arrow in eye-detect AF, then you can use the joystick to swap the eyes on one face if you choose. This can be between any recognizable eyes in frame within the AF area. If you manually swap eyes or face with joystick in this way, then the single-box turns into a double-box to signify that a manual subject selection has been made.
The white box, single or double, only signifies the subject the camera is interested in tracking. No autofocusing is actually taking place until you initiate with shutter button or back button AF.
With Face+Tracking+Eye-Detect enabled, and being in Servo mode, and with the setting “Initial Servo AF pt for Face+Tracking” in the AF Tab (magenta) Page 5 set to “INITIAL SET PT SET FOR…” or “AF PT SET FOR…” Different things happen and I then get confused. Now, in the INITIAL setting, when no BB-focus is pressed, there are no longer any boxes with arrows continuously on the eyes; instead, there is a big White Box on the screen. I can move it around to pick my focus, which is cool. I have been practicing with the box right in the center and leaving it there; I then just move the camera to get whomever or whatever I want to be tracked into that center square, then I press BB-focus. From then on it follows, but if it’s not an eye or face it eventually gets confused and seems to snap to an eye if not initially on an eye. Thus, not sure what the point of this setting is since the camera will be searching for faces and eyes no matter what. I guess it can be useful if there are multiple people in the shot and I’d like to choose which to start with? But then in this setting I lose the eye-switching functionality. Am I correct in all this? Any suggestions?
You are correct. In this mode the camera will search for an eye (eye-detect AF enabled) within the white starting box only. It will never allow you to swap eyes with the joystick as it is not searching for all eyes within the frame automatically. The camera is only looking for eyes within the area of the small white box itself. This is most commonly used for designating non-people, non-animal subjects for SERVO AF as the camera doesn't search for those subjects on its own.
What if I want to track an inanimate object? If I have a scene where I’d like to track, let’s say, a model train, and I’d like it to track the first car as it goes around the track while I take pictures, always keeping that first car in focus. What settings do I use? I don’t think I would be in Face+Tracking+Eye-Detect mode, right? If not, what mode and setup? And how do I choose that first car to track and stick on it?
For your car example, if you can get a clear view of the car approaching your area of interest, Face+Tracking+Eye-Detect mode is probably still the best choice. Just push the system out of the AUTO for “Initial Servo AF pt for Face+Tracking”. This is best if you care more about a particular car over others or not following the race more generally and focusing on a particular car.
The only exception that would come to mind would be if your viewpoint obstructs the car's approach, then I would suggest all the same settings, but just keep the starting white square to the side the cars approach to pick them up as soon as they enter the frame. Auto racing is fairly predictable for pathing and this is helpful for simplifying your AF setup.
If you are following the race more generally and don't care so much about particular cars, you might try the horizontal zone mode. The system will now always default to tracking and focusing on the closest subject with detail inside the large white bracket. The system will now grab the closest car within the bracketed area. This is more useful if you have foreground obstructions trackside that might otherwise grab focus on trackside objects or marshalls when using the 100% x 100% frame available for Face+Tracking.
I believe there’s a feature where one can touch on the screen to lock on a subject. Is that true? If so, where and how? I’ve read the manual but I’m still confused. And if this feature exists, can it be used within the EVF as opposed to the back screen? If so, how? (And I’m not referring to Touch Shutter.) I mean, with my eye viewing through the EVF, can I choose a point to track and have it stick?
There's a tap to track feature available by touching the LCD when it's actively displaying the scene. It will give you the double-box on your manually selected subject. In order to activate a similar function while using the EVF, you need to turn on "Touch and drag AF settings" in AF tab 1 (magenta 1). When touch and drag is active and you are looking through the EVF, if you touch and hold on the active portion of the LCD, you will see a dotted orange circle. You can use your finger to drag this circle anywhere in the frame and release to manually select the subject (white double-box). You can also tap and release to select, but it is more difficult to be precise with placement of your orange circle this way.
Hope this helps and it is true that the manual is not very clear on this.
