BEST ND FILTER ADAPTER FOR THE SONY RX100 VII: MAGFILTER VS LENSMATE - YouTube
52MM Filter Adapter for Canon PowerShot G5X G7X II G7X Mark II by Lensmate | eBay
Sony RX100 VII, RX100 VI Quick Change Filter Adapter Kit 52mm – Lensmate : Specialty Digital Photo Products
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
Lensmate Quick-Change Filter Adapter Kit for Sony RX100 II/RX100-52mm -
Amazon.com : Lensmate Quick Change Filter Adapter Kit 52mm for Sony RX100 VII or RX100 VI : Electronics