The luminous intensity of the RX100 cries out for filters for various effects. Looking for a suitable adapter I first encountered the "Carry Speed MagFilter Adapter". The next day I had him from Amazon Marketplace. The adapter makes it a suitable camera for high-quality impression. The system with the magnetic ring I find also good, but unfortunately there is this adapter for the RX100 only with 52mm filter thread. Before I finally installed it, I was still looking for a suitable filters and came across on this adapter from Sony with a 49mm filter thread. Thank God! Now I can use the high-quality filter my old OM2. I have saved no good 200.-! The adapter is mounted easy as directed. The glued-ring is systemic thicker than the thin magnetic ring of Carry Speed, but not interfere even with the relatively tight-fitting original Sony pocket. The clip-holder withstands even light shocks without the adapter drops. My filters can be spun on and off like butter and price is to (although Sony!) And even cheaper (30 instead of 45). It is a pity that Sony does not like Carry Speed, as are a small bag so. Who the appropriate filter anyway still have to buy, is probably just as happy with the Carry Speed MagFilter system. For me, this adapter from the price, function and quality are the perfect solution. Note .: For me the bond holds properly. I leave the ring but also rest with a book complained good 24 hours.