Phase detect AF video - I still don't get the "why".

Started Jul 9, 2012 | Discussions thread
MikeRan Regular Member • Posts: 313
Re: Phase detect AF video - I still don't get the "why".

Shield3 wrote:

Ok guys, ignore the 12fps. I can shoot in "hi" mode @ 8FPS with AF at any F/stop. It will refocus for each shot as well.

And the aperture opens and closes 8 times per second too...

Shield3 wrote:

Also, if the Af system is good to F/5.6, why can I not set my F/2.8 lens to F/5.6 and record video? I can stick a 70-300 Tamron on there and record F/5.6 AF video at the long end.

Good question.

 MikeRan's gear list:MikeRan's gear list
Sony SLT-A77 Sony a9 Sony DT 18-250mm F3.5-6.3 Sony DT 35mm F1.8 SAM Sony FE 24-240mm F3.5-6.3 OSS +1 more
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