Quote Originally Posted by Sean Setters


But in tennis, the subjects typically move toward you, away from you, and side to side.
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<span style="font-family: 'Verdana','sans-serif'; color: black; font-size: 11pt;"]Thatis very true, but an object coming towards/away fromyou is easier to track than one moving side to side. <o></o>


<span style="font-family: 'Verdana','sans-serif'; color: black; font-size: 11pt;"]So how fast is the subject moving whenyou take the exposure / focus readings?<span style="mso-spacerun: yes;"] If the subject is moving slowand is at a far distance (DOF will aid focus) then NON servo will work fine or better- 50 to 100 ms to take the focus/exposure. <o></o>


<span style="font-family: 'Verdana','sans-serif'; color: black; font-size: 11pt;"]When you are panning, unless you use the assist focus points, you will probably not get a super sharp image, as shown in the above examples. In these examples, the multi focus points would have given a sharper photo. Yes, you may need to switch between single / multi focus points quickly and some cameras allow you to do this. But the example shown is what we are discussing. You can also use the AF-on switch.