Sony has released a video showing the AF tracking and 8 fps live view burst of the newly announced a6300, as well as a video demonstrating AF with subject tracking in 4K video.
The camera appears to have impressive AF subject tracking accuracy, following not just the dog but the dog's face in the demo. We'll reserve judgement until we get our hands on one, but previous Sony cameras had a tendency to wander off to other areas of the subject when using general subject tracking, so these results indeed appear impressive. The expansive 425-point array also mean the camera can track the subject to almost any point in the frame. Have a look below.
Sony a6300 '4D Focus' demo
The a6300 also potentially addresses one of the largest shortcomings of mirrorless cameras for action shooting: the often stop-motion playback of last-shot images, as opposed to a live feed, when shooting continuous bursts. We recently reported on Nikon's calling out of this particular weak point of mirrorless cameras, so Sony's response in the a6300 today seems timely. Essentially, the a6300 offers a live feed in the EVF or on the LCD during 8 fps continuous shooting, in between what seem to be very short blackouts. This should make it much easier to both pan the camera and still keep your subject in the frame, or keep your selected AF point(s) over your subject.
The video above, in addition to one Sony presented at the press event earlier today, demonstrate a promising live feed during 8 fps bursts, but ultimately its utility will be largely dependent on the length of those blackouts between shots. Sony claims that the length of blackouts is competitive when compared to a <$1000 DSLR.
While that might seem like a relatively low bar, the fact that Sony is getting a live feed off the sensor at all in between shots at 8 fps represents significant progress in the realm of mirrorless cameras. In comparison, a DSLR doesn't have to do anything but return the mirror to get you this 'live feed' through the optical viewfinder between shots.
Autofocus in video
Sony has also released a video demonstrating impressive AF in 4K video recording. There appears to be little hunting, with fast refocusing and even subject tracking available during movie recording. Have a look above.
Subject tracking in video is potentially significant. Previous Sony cameras would require you to use an archaic 'Center Lock-on AF' function to track subjects you initiated focus on in video (save for faces, which the camera would track in 'Wide' AF area mode). Center Lock-on AF never really worked well, and was very cumbersome to use. In contrast, the a6300's ability to automatically select AF points to stay on your subject in video appears to be quite impressive. This should be a boon for videographers.
At least on paper, we think that these advances mark some significant progress for mirrorless (it's too bad we can't say the same for the a6300's ergonomics), and we'll be curious to see how the systems perform when we get our hands on a production a6300.
from Articles: Digital Photography Review (dpreview.com) http://ift.tt/1nNxBO7
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