Lensmate Quick-Change Filter Adapter Kit for Sony RX100 II/RX100-52mm - Newegg.com
How to Install the Lensmate Quick Change Filter Adapter on the Sony ZV-1 or RX100 - YouTube
Amazon.com : Lensmate Quick-Change Filter Adapter Kit Compatible with Canon G7X Mark III, G7X Mark II & G7X (Also fits G5X Mark II & G5X) - 52mm : Electronics