- I was so disappointed with A6400 after watching Matt Granger’s first impression on his utube channel. It would not track faces and grabs random subjects. So I watched others tubers take on A6400 af performance. Others says it’s a little jumpy while others says it’s improved. I then looked at the comments section and a couple of person mentioned he was using af-a instead of af-c. So I examined the footage carefully and sure enough it was on af-a.
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