mwsilver wrote in post #18350798
Perhaps I'm not fully understanding your concern. There is no beep or acquisition light in AIServo because they both indicate not just the acquisition of focus, but focus lock
. Since focus is never locked, and can change continuously as you or your subject moves in AIServo, a lock indicator of any kind would be irrelevant. If you want focus lock indicators and still want to retain AIServo's focus tracking ability, then you'll need to use AIFocus. .
The Canon 7DII user manual disagrees with your statements of 'focus lock'. In fact, the third bullet clearly points out 'focus lock' is NOT the same thing!
- on p. 69
"Menu Disabling the Beeter You can prevent the beepter from sounding when focus is achieved or during self timer operations."
- on p.80
"The AF point that achieves focus will be displayed. At the same time the beeper will sound and the focus indicator < ● > will light up."
- on p.84
when focus is achieved, the AF point will turn green and the beeper will sound.
- on p.87
If [(camera icon)1: Beep] is set to [Disable], the beeper will not sound when focus is achieved.
"...as the sound should be either continuous while focus is acquired or there should be a second type of beep informing about losing focus."
But wait apparently it does! The user manual says the beeper continues to beep...which clearly contradicts the belief that beeping on a moving subject does not function!
- on p. 81
"The beeper continues to beep softly. The focus indicator < ● > does not light up.)
It indicates that the camera is focusing continuously on a moving subject. (The focus indicator < ● > does not light up.) You can take sharp pictures of a moving subject. Note that focus lock (p8.3) will not work in this case.
- on page 83
In the 'A+' mode if the subject moves, distance to camera changes) while or after you focus, AI Servo AF will take effect to focus on the subject continuously. The beeper will continue beeping softly.) As long as you keep the Area AF frame positioned over the subject while pressing the shutter button halfway, the focusing will be continuous. When you want to take the picture, press the shutter button completely."
So the camera SHOULD continue to beep, yet the views expressed within this very thread believe that beep on continuous focus stops?! So this warrants more investigation.
Ah, on p.88 it is clarified somewhat...
"AI Servo AF for Moving Subjects
This AF operation is suited for moving subject when thee focusing distance keeps changing. ..,When the AF area selection mode is set to 65-point automatic selection AF, focus tracking will continue as long as the Area AF frame covers the subject.
With AI Servo AF, the beeper will not sound even when focus is achieved. Aso the focus indicator in the viewfinder will not light up."
"AI Focus AF switches the AF operation from One-shot AF to AI Servo AF automatically if a still subject starts moving.
After the subject is focused in One-shot AF, if the subject starts moving the camera will detect movement, change the AF operation automatically to AI Servo AF, and start tracking the moving subject".
"When focus is achieved with AI Focus AF with the Servo operation active, the beeper will continue beeping softly. However the focus indication in the viewfinder will not light up. Note that focus will not be locked in this case.
...but nevertheless the manual does state, "In the 'A+' mode if the subject moves, distance to camera changes) while or after you focus, AI Servo AF will take effect to focus on the subject continuously. The beeper will continue beeping softly.)"