The Sony Cyber-shot RX100 III of 2014 was the generation that made the pocket flagship complete: it added a retractable pop-up EVF and a brighter 24-70mm equivalent f/1.8-2.8 zoom to the proven 20MP 1-inch sensor formula.
It pairs the 20.1MP 1-inch Exmor R sensor with a Zeiss Vario-Sonnar T* 24-70mm f/1.8-2.8, the ingenious pop-up 1.44M-dot EVF, a 180-degree tilting screen, built-in ND filter and full HD 50p video from the XAVC S codec, all in a true shirt-pocket body.
Its significance is being the sweet spot of the RX100 line: later marks added 4K and faster readout at rising prices, but the III introduced the EVF and fast lens that define the series, which keeps it the value pick a decade on.
Used RX100 IIIs are plentiful; check the pop-up EVF mechanism latches cleanly, the lens extends without grinding, and the flexible screen ribbon behaves, since these three moving parts see the most wear on this generation.