SD memory cards are an important accessory for any photographer using a point and shoot digital camera. If you are afraid of losing your small SD memory card, buy a cheap plastic container for it. This will make it appear larger so you can easily find it when you need it, plus it will protect the card from damage. The best SD memory cards will have a class rating of 4 or over. This determines the speed of the card. Having a card with a higher speed means you can shoot pictures even faster, which is important for those who do multi-shot bursts.