Master your camera’s autofocus: which AF points to use and when to use them
Making the most of your range of AF points
By default, your DSLR uses every AF point in each shooting mode but often you can choose AF points manually. Press the AF Point Selection button at the top-right of the rear of the camera (this will differ by brand and model) and the display will confirm that multi-point Auto Select AF is in use.
To switch from AF Auto Select to Manual Select mode, press the AF Point Selection button as in the previous step, but then press the Set button. The camera will now switch from multi-point selection to using only the central AF point for autofocus. Press the Set button again to revert to multi-point Auto Select.
Change the AF point
You’re not limited to using the central AF point in Manual Select mode. After switching to single-point AF, you can use the arrow keys to switch to any of the other eight AF points. To return to the central AF point, press the Set button again.
Manual AF point selection works in any of the various AF modes, so you can couple use of selective AF points with One Shot AF for stationary subjects, AI Focus AF for erratic subjects, or AI Servo AF for tracking moving subjects. Select the most appropriate AF mode by pressing the AF arrow key.
PAGE 1: What your camera’s autofocus points can do for you
PAGE 2: Making the most of your range of AF points
PAGE 3: When to use your different AF points
PAGE 4: How to choose the best AF point
PAGE 5: How to fool your autofocus – and why you should do it
Manual Focus: what you need to know to get sharp photos
Focus Modes: how, when and why you need to change your AF settings
Digital camera tips: how to choose the best AF mode
on Thursday, February 7th, 2013 at 4:42 pm under Photography Tips.
Tags: camera tips, How to focus