Review on Panasonic RP SDUC64GAK Ultra Speed Class 3 by Jeffrey Nunes

This is the Rolls Royce of SDXC cards. This card costs twice as much as a regular SDXC U1 type card, but if you're looking for speed and reliability, this card is for you. In my Sony DSC-RX100III camera, this card showed no lag at all, even when recording long HD videos and continuous shooting. In fact, this card is so fast (judging by the packaging) that it can even record 4K video!