Quote Originally Posted by HDNitehawk


Quote Originally Posted by Richard Lane
If you set all of these settings as described above, and then you have a bird in a tree, all you have to do is change the AF point selection from; AF Point expansion or Zone AF to..., Single Point AF or Spot AF.

Rich


With the 1D IV I can use AI servo mode and get really good focus on sitting subjects. That wasn't always the case on the 7D or the 5D II. Single Shot, single point was always more accurate than AI mode. So for me I would switch from AI to single shot if I thought I had a subject sitting for a while. Then switch back to AI servo if I were thinking it was getting ready to bolt.


Or maybe I am miss understanding your wording of single point or spot af and that is what you were saying.


Rick


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<span style="font-size: 11.6667px;"]Hi Rick,


<span style="font-size: 11.6667px;"]I'll try to clarify. The reason that I had suggested to switch to Single AF Point or the smaller Spot AF was so that the camera would not focus on a branch, which the AF expansion point or the Zone AF would do (if the bird was in a tree). It had nothing to do with AI Servo vs. One Shot.


When I use the AF-On back button for focusing and tracking I can effectively go from AI servo mode to One Shot by lettting go of the AF-On back button when focus is locked, and then just compose and press the shutter button for capture only, this affectively behaves as ONE SHOT since tracking has been suspended when you take your thumb off of the AF-On back button.


Are you using the AF-On for tracking? Because another advantage is that it is much easier to track by fully pressing the AF-ON button, then it is to track with a half-press shutter button.





Rich


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