linda_pullman Posted July 26, 2006 Share Posted July 26, 2006 As I know, most of airshow or birds shooters use AI Servo mode on camera. What about lens? In what position is your IS switch? For example, 70-200 f/2.8 L lens needs (+/-) 0.5 sec. to lock its stabilizer. Does it cooperate with AI Servo? Is this combination possible? If not, I don't find any advantage of IS on any tele-lens (when shooting moving objects). Could anyone please explain this to me? Thank you, Linda Link to comment Share on other sites More sharing options...
grant g Posted July 26, 2006 Share Posted July 26, 2006 If I have IS, I usually leave it on. The only time I turn it off is for sports when I am at, uh, 'ball-freezing' shutter speeds. Say 1/2000 and up. Link to comment Share on other sites More sharing options...
awindsor Posted July 26, 2006 Share Posted July 26, 2006 It is possible. I use Servo focusing and image stabilization together when shooting birds on the wing. Link to comment Share on other sites More sharing options...
h.l. Posted July 26, 2006 Share Posted July 26, 2006 The recommended procedure for using AI Servo is to track the subject for approx 1 sec before releasing the shutter. The 0.5 sec of the IS startup is well within this interval. Unless you are panning, you should turn off IS for moving subjects. IS will counter your attempt to track the subject (remember, the point of IS to stop your motion). There is a special mode for panning. You'll likely to track the subject for a couple of sec in this case also. Link to comment Share on other sites More sharing options...
whwhitejr Posted July 26, 2006 Share Posted July 26, 2006 Linda, it works fine. I shoot bursts and most of the burst is in focus. A lot of the time the first shot is not in focus but the rest generally are with my 70-200 f2.8L IS. IS on and in AI servo. You are almost at infinity so there isn't much focus movement inside the lens. I hope this helps, Bill Link to comment Share on other sites More sharing options...
whwhitejr Posted July 26, 2006 Share Posted July 26, 2006 Linda, that's IS mode II only(pan mode), Bill Link to comment Share on other sites More sharing options...
linda_pullman Posted July 27, 2006 Author Share Posted July 27, 2006 Thank you for your comments Linda Link to comment Share on other sites More sharing options...
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