Here's a video I did about a month ago to introduce the new Magfilter threaded adapters for high end compact point and shoot cameras. These filters are now available to use any brand Polarizer or ND filter on cameras like the new Sony RX100. Adapters are available to fit 52mm, 55mm, and 58mm threaded filters of your choice. Check it out the Carry Speed website (click here).
Carry Speed MagFilter Threaded Adapter