Best autofocus settings for low-angle, from-the-hip shots of moving dogs
Asked 9/19/2015
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I photograph dogs with a Canon 60D and a wide-angle lens, usually holding the camera low to the ground and shooting "from the hip." I use AI Servo, continuous burst, and a fast shutter speed, and I usually keep the center AF point selected so I can control focus. The problem is that dogs often move off-center, so many frames end up out of focus because the center point is no longer on the dog.
For this kind of chaotic, close-range action, should I keep using the center AF point, or switch to all AF points and let the camera pick the subject? Is there a better autofocus approach when I can't realistically pre-focus or manually move focus points while shooting?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
10y ago
2 Answers
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Basically, yes, use all your focus points and hope for the best. I use center focusing quite a bit too, but when doing AI servo and continuous shooting it's hard to keep the center point on a moving target, so I often switch back to all focus points.
In your case, you definitely want all your focus points on. I don't know the exact algorithm it uses to decide what to focus on, but being closest is up there. If you're just using center focus, you'll have much lower chances because if you get just a little off it may not focus where you want. If you have all of them on, you've got a good chance it will focus on the closest thing, which is what you want. Of course, if you're too close, that could be a problem too, but I'll let you worry about that. :-)
Note, I also typically use back-button-focusing (not always), but in this case you're probably better off sticking to shutter button auto-focus.
Originally by user39138. Source · Licensed CC BY-SA 4.0
user39138
10y ago
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For this situation, using all AF points is usually the better choice. With AI Servo and burst shooting, it’s difficult to keep a single center point on a fast-moving dog when you’re shooting low and not looking through the viewfinder. Letting the camera use all points gives you a better chance of locking onto the closest subject, which is often the dog you want.
Also consider separating autofocus from the shutter button by enabling AF-ON/back-button focus. That can make tracking easier and give you a little more control while firing bursts.
Keep shutter speed high as well. Some frames that look “out of focus” may actually be blurred by subject motion rather than missed focus.
So the practical setup is: AI Servo, continuous shooting, all AF points active, and a fast shutter speed; back-button focus can help too.
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