Lensmate RX100 Filter Adapter 49/52mm: Sony Cyber-shot Talk Forum: Digital Photography Review
Lensmate Quick-Change Filter Adapter Kit for Sony RX100 VA (Also fits RX100 V & IV) - 52mm : Electronics - Amazon.com
Caruba Lensmate SX20 IS, SX30 IS, SX40 IS Filter Adapter | Saake-shop.nl
Sony RX100 VII, RX100 VI Quick Change Filter Adapter Kit 52mm by Lensm – Lensmate : Specialty Digital Photo Products
Amazon.com : Lensmate Quick-Change Filter Adapter Kit for Sony RX100 VA (Also fits RX100 V & IV) - 52mm : Electronics
Lensmate Quick-Change Filter Adapter Kit Compatible with Canon G7X Mark III, G7X Mark II & G7X (Also fits G5X Mark II & G5X) - 52mm - Lens Caps - ShaShinKi
Sony RX100 VA (also fits V, IV, III, II &1) Quick Change Filter Adapte – Lensmate : Specialty Digital Photo Products