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Old 20th of May 2008 (Tue)   #1
Laramie
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Default Ai Servo AF and 6.5 fps, will camera continue to focus during the 6.5 fps?
Was using Ai Servo mode with my new 400 5.6 at the dog park and was wondering. Let's say a dog is running towards me and I"m holding down the button to focus (using custom function, focus on "AF-On" button).

Using burst mode at 6.5 frames per second, during those shots, if the dog is getting closer to me, will the camera keep focusing or will those burst mode frames only be in focus what what the last focus point was before took the first frame? Thanks
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Old 20th of May 2008 (Tue)   #2
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Default Re: Ai Servo AF and 6.5 fps, will camera continue to focus during the 6.5 fps?
Yes.
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Old 20th of May 2008 (Tue)   #3
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Default Re: Ai Servo AF and 6.5 fps, will camera continue to focus during the 6.5 fps?
You cannot answer with a "yes"! It is a either or question! Sorry but know the answer myself!
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Old 20th of May 2008 (Tue)   #4
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Default Re: Ai Servo AF and 6.5 fps, will camera continue to focus during the 6.5 fps?
Quote:
Originally Posted by cowboylife View Post
Was using Ai Servo mode with my new 400 5.6 at the dog park and was wondering. Let's say a dog is running towards me and I"m holding down the button to focus (using custom function, focus on "AF-On" button).

Using burst mode at 6.5 frames per second, during those shots, if the dog is getting closer to me, will the camera keep focusing or will those burst mode frames only be in focus what what the last focus point was before took the first frame? Thanks
It will ONLY hit 6.5 FPS if focus is maintained, if it loses focus and needs to lock on again, be some reduction in FPS.
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Old 20th of May 2008 (Tue)   #5
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Default Re: Ai Servo AF and 6.5 fps, will camera continue to focus during the 6.5 fps?
AI Servo will attempt to keep focus moving.
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Old 20th of May 2008 (Tue)   #6
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Default Re: Ai Servo AF and 6.5 fps, will camera continue to focus during the 6.5 fps?
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Originally Posted by krusnof View Post
You cannot answer with a "yes"! It is a either or question! Sorry but know the answer myself!
Sorry, I guess I read the question too quickly and didn't read all the way thru. I meant Yes it will continue to focus.
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Old 20th of May 2008 (Tue)   #7
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Default Re: Ai Servo AF and 6.5 fps, will camera continue to focus during the 6.5 fps?
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Originally Posted by elysium View Post
It will ONLY hit 6.5 FPS if focus is maintained, if it loses focus and needs to lock on again, be some reduction in FPS.
Well...not necessarily. It depends on how you set-up the AI-servo parameters...Selecting drive priority in the CF menu will havethe camera fire away without securing focus lock first.....right?
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Old 20th of May 2008 (Tue)   #8
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Default Re: Ai Servo AF and 6.5 fps, will camera continue to focus during the 6.5 fps?
Google is your friend...

http://photonotes.org/other/ai-servo.html

http://www.shutterfreaks.com/Tips/CanonAIServo.html

http://photography-on-the.net/forum/...ad.php?t=81536

I think it's also discussed in your manual.
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Old 20th of May 2008 (Tue)   #9
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Default Re: Ai Servo AF and 6.5 fps, will camera continue to focus during the 6.5 fps?
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Originally Posted by GBRandy View Post
Well...not necessarily. It depends on how you set-up the AI-servo parameters...Selecting drive priority in the CF menu will havethe camera fire away without securing focus lock first.....right?
On all bodies or just 1D bodies? I don't remember seeing this CF option on my 40D.
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Old 20th of May 2008 (Tue)   #10
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Default Re: Ai Servo AF and 6.5 fps, will camera continue to focus during the 6.5 fps?
Quote:
Originally Posted by GBRandy View Post
Well...not necessarily. It depends on how you set-up the AI-servo parameters...Selecting drive priority in the CF menu will havethe camera fire away without securing focus lock first.....right?
Ooooh! Good thinking, sorry, that must have slipped my mind.
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Old 20th of May 2008 (Tue)   #11
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Default Re: Ai Servo AF and 6.5 fps, will camera continue to focus during the 6.5 fps?
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Originally Posted by elysium View Post
Ooooh! Good thinking, sorry, that must have slipped my mind.
Since I don't think you, nor the OP, have a 1D series camera, the dependency on the C.Fn setting will not apply to you guys. The camera will try to continue focusing between shots in burst mode. But even if the subject is not in focus, the camera will continue to shoot the subject anyway.
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