These memory cards are great! Since there are 2, I was able to give one to my sister for part of her Christmas present! My camera takes SD cards, but is at optimum performance with an XC card. The SD card works great and is so much more inexpensive than XC cards. There is faster shooting performance with XC, but I don't mind the performance difference when I consider the price. Because after buying an expensive camera, I didn't want to shell out more money for an XC card. Maybe next year. This was SUCH a great deal on Great Offer Stock, the best price online or in the store i could find! So happy with my purchase!