Super-Zoom

You may have seen this video doing the rounds; it peers through the lens of a microscope at a smartphone chip and starts zooming in, giving you a visceral sense of just how insanely tiny today's transistors have become.

Sony says its new flagship all-in-one Cyber-shot RX10 IV offers an unmatched combination of AF speed and tracking. And though the bridge camera includes the same stacked image sensor and 24-600mm Zeiss lens as last year's model, it can now shoot up to 24 frames per second bursts and record 4K video.