Like the Ultra 2 and 3 Extreme also offers the Extreme 4 reliability for Sandisk is known as the market leader. The advantage of the Extreme 4 is the higher speed, so that it is future-proof. Thanks to the 8GB card offers enough space for JPEG and / or RAW images in excellent resolution. The change of the card is thus rarely necessary. Who the 8GB are still too few, and the 12GB or the 16GB version can use.