Tuesday, September 16, 2014

Sony Presents 4D AF

Sony presents 4D Autofocus that the company calls "the beginning of new era." Yooutube videos show its advantages form a user perspective (video #1, video #2:


9 comments:

  1. What's the technology behind 4D AF? Is it same as Lytro's multi-aperture technique?

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  2. this technology predicts positions of next moment base on current 3D position and speed, that's why it called 4D, 3D + Time

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    1. I'm a bit confused of the expressions in those 2 videos.
      the 1st one says that its AF is predictive. But 2nd one says that it tracks motion.
      What's right?

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  3. Predictive. These engineers never saw Barry Sanders run.

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  4. This technique has been used in film SLR cameras before. My Minolta 9000i has this function, hops 25 years ago ...

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  5. In the soccer scene, how does it know which player to focus on?

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  6. the one closest to the camera.

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    Replies
    1. ...or the one, that you select useing the tracking AF feature of those cameras.

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    2. probably not the one closest to the camera. see the video.

      i guess you can select it, but how would one do that when the scene is moving quickly and those cameras come with only a few buttons and no mouse (or touch screen).

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