One memory card is as good as another, you say? Though on the outside they may look nearly identical, the performance and capacity of your memory card can vary, just as a $2000 MacBook can run circles around a $200 notebook computer. Memory cards are built with different capacities for the same reason cameras are built for different purposes–for the simple reason that photographers have varying needs. A sports or wildlife photographer, for instance, will certainly need a memory card that is both fast and capacious for rapid shooting sequences, whereas a landscape or street photographer may care less about these aspects. And let’s not forget that in recent years there is also video recording involved.