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<blockquote data-quote="Bengt Nyman" data-source="post: 333611" data-attributes="member: 13692">If I use AF-C plus 3D, I would initially have to place the chosen focus point on the bird after which AF should be able to track it. But it obviously can not track during exposure which would suggest that I would have to&nbsp; place the chosen focus point on the bird again for the second shot, or it might be out of focus. If I set custom setting a1 so that photos can only be taken when focus is confirmed, will continuous shooting go on anyway without focusing, or will it wait for renewed focus confirmation and then expose again, or will it simply stop and require that I let go of the shutter release and start over ?If I use Auto I guess the system should find the bird against a more distant background like the sky. If I combine this with a1 for focus priority, will it find focus again before the next continuous shot or will it simply stop and require that I let go of the shutter release and start over ?I understand that &quot;Focus Tracking With Lock On&quot; stabilizes the distance at which the AF expects to reacquire the object, keeping AF from jumping from the bird to a treetop in the foreground.Maybe you can tell me the difference between the effects of AF-C+Auto+focus priority versus&nbsp; AF-C+d51+focus priority.Thanks!</blockquote>

[QUOTE="Bengt Nyman, post: 333611, member: 13692"] If I use AF-C plus 3D, I would initially have to place the chosen focus point on the bird after which AF should be able to track it. But it obviously can not track during exposure which would suggest that I would have to place the chosen focus point on the bird again for the second shot, or it might be out of focus. If I set custom setting a1 so that photos can only be taken when focus is confirmed, will continuous shooting go on anyway without focusing, or will it wait for renewed focus confirmation and then expose again, or will it simply stop and require that I let go of the shutter release and start over ? If I use Auto I guess the system should find the bird against a more distant background like the sky. If I combine this with a1 for focus priority, will it find focus again before the next continuous shot or will it simply stop and require that I let go of the shutter release and start over ? I understand that "Focus Tracking With Lock On" stabilizes the distance at which the AF expects to reacquire the object, keeping AF from jumping from the bird to a treetop in the foreground. Maybe you can tell me the difference between the effects of AF-C+Auto+focus priority versus AF-C+d51+focus priority. Thanks! [/QUOTE]

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