PDAF plus 4K
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PDAF plus 4K

The RX100 V's 4K video mode certainly looks good on paper: the camera uses a 5028 x 2828 pixel region to create UHD video, meaning it oversamples by 1.3x in each dimension. And with faster sensor readout, there's significantly less rolling shutter to worry about. Sony tells us this is as close as they've gotten to global shutter performance in a digital still camera.

The ability to use phase-detection autofocus while recording 4K video is a benefit, since it reduces the risk of the camera missing focus and having to hunt (and ruining your clips in the process). Sadly, without a touchscreen it's not nearly as useful as it could be.

There's still plenty to make a video enthusiast happy: the 960, 480, and 240 fps slow motion modes all gain twice as much recording time thanks to the LSI, meaning you can record 960 fps (upscaled to 1080/30p) for up to 8 sec. 1080/120p and S-Log profiles are all here.