Are you are looking for a great wired remote control for your Sony Cyber-shot DSC-RX100 III ? This is the best one I have found and it is much more reliable than using the PlayMemories Camera App.
Even though this video shows the older RX100 II The new Sony RM-VPR1 works perfectly with the RX100 III. It Controls shutter capture, movie record start/stop as well as optical & digital zoom capabilities. Intended for use with models utilizing Sony’s ‘Multi’ terminal found on both the RX100II and RX100III.
* Vibration-free shutter release
* Control shutter release, video record and zoom
* Multi Interface Shoe
* Compatible: RX100 III, RX100 II, HX60V, HX400V, AX100, PJ810, A6000, A5000, RX1R, RX10, A7R, A7, A7S
Here is a complete review of the Sony RM-VPR1 wired remote control designed to work with most current and future Sony cameras.