UPDATE June 29 2015: We've updated our studio test for the RX100 IV with low light results, and we've also posted an initial real-world sample gallery. 


Sony's latest RX100, the Cyber-shot RX100 IV, brings the manufacturer's stacked CMOS sensor design to the 1"-type sensor size for the first time. The 20MP chip, also in the Cyber-shot RX10 II, pushes all the pixel circuitry onto a separate layer, creating room for high-speed processing within the chip. Like the RX100 III, it offers a 24-70mm equivalent F1.8-2.8 zoom lens. See how it performs against its peers in our studio test scene.