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Choosing a Focus Mode

If you’re using one of the newer autofocus lenses made specifically for the Sony Alpha cameras, such as the Sony 28-75mm SAM Zoom lens, you can easily switch from automatic to Manual focus by moving the AF/MF switch on the lens mounted on your camera. If you set that switch to MF, you’ll be using manual focus no matter what other focus settings you make on the camera; the MF switch on the lens overrides all other focus settings. (Of course, if you’re using an older lens that is made for manual focus only, such as some Minoltas from the pre-Sony days, autofocus controls on the camera have no effect in that case either.)

If you’re using a Sony Alpha-compatible autofocus lens and you leave the switch on the lens set to AF, you’ll need to choose an appropriate focus mode on the camera. (You can read more on selecting focus parameters in Chapter 5.) If you’re using the Auto shooting mode, the focus method is set for you automatically, to AF-A, but you can then change it if you want. Be aware, though, that if you afterwards turn the camera off and back on, or switch away to another shooting mode and then back to Auto, the camera will again set the focus mode to AF-A. Therefore, you can easily end up with the camera being set to a different AF mode than the one that is set with the AF mode dial, discussed next.


  

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