RX10 IV with 0.03s. AF/25x optical zoom

24–600 mm F2.4–4 large-aperture optical zoom lens
This 25x optical zoom lens features remarkable 24–600 mm extra-wide-angle to ultra-telephoto range plus macro capability, AA (advanced aspherical) and ED (Extra-low Dispersion) glass elements, ZEISS® T* Coating, and large F2.4–4 aperture. These help the camera to provide high optical performance for high resolution and beautiful bokeh.

Exmor RS® CMOS sensor for speed
315-point focal-plane phase-detection AF provides for extraordinarily fast, precise autofocusing and tracking. Furthermore, the 20.1MP (effective) 1.0-type stacked CMOS image sensor with DRAM chip enables up to 960fps super slow motion shooting and up to 1/32000 s super high speed Anti-Distortion shutter.  

High-speed BIONZ X image processing engine
Achieving processing performance beyond its predecessor, the new BIONZ X™ image processing engine is remarkably reliable at capturing fast-moving subjects and continuous shooting of up to 24fps. Its newly developed image processing algorithm lets you capture high-quality images with less noise all across the sensitivity range while maintaining natural details.

Fast Hybrid AF moves farther ahead
For its RX10 series camera debut, Fast Hybrid AF is capable of lightning-fast 0.03 s autofocusing response. This groundbreaking AF system seamlessly integrates the superlative speed and tracking of focal-plane phase-detection AF plus the high accuracy of contrast-detection AF, and boosts the camera's capabilities to focus, track, and capture sharp, clear still images of subjects in all situations, even in the middle of fast, dynamic action.

Wide high-density 315-AF-point coverage
The world's most focal-plane phase-detection AF points (315) cover approx. 65% of the entire image area of the RX10 IV's new image sensor. This makes AF coverage widespread and dense enough to quickly capture subjects, such as small or fast-moving ones that are otherwise difficult to focus on, throughout the image area. [1] Phase-detection AF coverage (315 points) [2] Contrast-detection AF coverage (25 points)

High-density Tracking AF Technology
Tracking performance is highly reliable, as the RX10 IV is the first Cyber-shot™ camera with High-density Tracking AF Technology that activates AF points to cover the area around a subject with outstanding precision and stability. [1] AF points that appear on actual screen [2] AF algorithm (not shown on actual screen) 

Easy, natural Touch Pad and Touch Focus 
With Touch Pad function, you can shift focus simply by sliding your finger across the LCD screen from one area to another, while looking at the viewfinder. Whether you make the shift according to finger motion distance (relative position) or the area of the frame you touch on the screen (absolute position), shifting is smooth and easy. For Touch Focus, simply touch the LCD at the point of the image you want to focus on. 

Real-time Eye AF
Real-time Eye AF can capture intriguing facial expressions with highly precise eye detection that has been enhanced to automatically focus and track focus on a subject’s eye, even as the face moves or turns to a 3/4 view. This capability extends your freedom to frame a great shot.

AF streamlines focus operation
Faster autofocusing relies on smart functions including Focus Range Limiter, which allows you to restrict focus to subjects that are 3 m or farther away; AF-ON setting, which lets you trip the shutter without the lengthier half-press focus sequence; and AF-A mode, which automatically switches between AF-S (Single AF) and AF-C (Continuous AF) modes, according to changes in subject motion.

Recall Custom Setting during Hold
Memorized exposure settings (shutter speed, aperture, AF area, etc.) can be assigned to custom buttons for temporary recall while the button is held. For example, if you shoot sports in a stadium, you might want to quickly capture a shot of the scoreboard, requiring a temporary change in exposure, and then go back to the action.