The A6400's body may be the same old, the same old, but the electronics and software are new and much improved. It has the same 24.2 megapixel CMOS sensor that we liked on the last model, but it now packs the latest Bionz X processor. It increases the native ISO range to 100-32,000, expandable to 102,800 for one thing.
It also provides burst speeds of up to 11 fps with the mechanical shutter and 8 fps with the new, completely silent electronic shutter. In addition, you can turn off a few shots before buffer fills: 99 for JPEG and 46 for RAW files.
Taking such outbreaks is pretty useless if autofocus can't stop, but this is where the A6400 really shines. The Hybrid AF system has 425 contrast detectors and 425 phase detector pixels covering 84 percent of the image area. It makes better use of the technology than ever with the new software loan from its fast-paced cousin, the full frame A9.
Sony's real-time Eye AF and tracking features are powered by predictive and recognition AI. All you have to do is choose your topic and it will lock on and hold it, and if it's a face, you automatically get face and eye detection. It will continue to track your subject even when they are looking away, then lock on when they return. Sony said the AI system uses depth, pattern recognition and color to track items all the way up to the maximum 11 fps shooting speed.
This feature is miles ahead of any other camera manufacturer's tracking / face / eye detection. I tested it with dogs, cyclists and other items, and it helped me get the highest percentage of focus shots I have ever had at high outbreaks, especially in humans. Of course, it works best in good light, but I found it very effective even at ISO & # 39; is as high as 12,800. It will be especially convenient if you try to shoot sports in dim colleges, for example.
Of course it is not perfect. There are still moments when it loses items even though they are clearly in the frame. Overall, Sony has the best AI eye and face tracking auto focus system on the market.
And it only gets better. Later this summer, Sony will release a firmware update that includes tracking of animals. Although Sir Mewmew has particularly fluffy fur, the system will lock your eyes to ensure the best shot. In addition, these features come with Sony A7 III, A7R III and A9 via future firmware updates. And it will benefit not only photographers but also video shooters.
Now let's talk about my vlogging issues. It may be unfair to exclude this feature on the A6400 because it does so many other things well, but actually Sony encouraged this idea by publishing not only one but two videos that exploit the feature.
The biggest problem is the lack of stabilization in the body. A lot of vlogging involves walking around while holding a camera, often while expanding it by using a Gorilla Pod or monopod. To put it mildly, without stabilization, your viewers will get sick. The best thing to do is get a stabilized lens zoom, but it's no match for an in-body system, and many of Sony's best primers aren't stabilizing.
The A6400 and other Sony cameras suffer from pretty bad rolling shutter. When combined with the lack of stabilization and occasionally uneven handheld video, it is a perfect storm of rubbery, wonky shots. I found out that the A6400 has more jello than the Fujifilm X-T3 or Nikon Z6, which both allegedly use Sony sensors, oddly.