I shot some test footage with the A6300 this weekend and was surprised to see the files on the memory card were MPEG 4.

The camera manual and website states the files are XAVC S.

Why am I seeing that the files are MPEG 4?

The improvement in resolution over HD on my 45" 4K TV is impressive.

The XAVC S wrapper for all the Sony Alpha cameras is MP4.

Here's a video I shot on the A6300 that you can stream or download in 4K:

https://vimeo.com/161682483:

Here's the YouTube version in 4K:

http://youtu.be/8GaPVXh_5Lg

Very nice Ken. What lens (lenses?) did you use?

Thanks, Charles. I used the Sony 18-200mm lens (silver version).