We test Sony's firmware update for the Sony a9 ([ Ссылка ]). Eye AF was excellent before, and it's a little better now - though it still fails in heavily backlit situations. Lock-on AF tracks a subject as it moves across the frame. Before the firmware update, Lock-on AF was almost useless. Now, Lock-on AF is extremely useful for sports and even still subjects where focus-recompose is easier than manually changing focusing points. Finally, I discuss the importance of being able to delete a group of photos all at once.
Previous reviews of the a9:
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Red dot on the back: [ Ссылка ]
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![](https://i.ytimg.com/vi/bFAvQz0y3jg/maxresdefault.jpg)