When you buy a digital camera, you’re going to need a memory card. Even many video cameras are requiring them now. With rows upon rows of them in some stores, most people just grab the cheapest one they can find. While this might be ok for many people, these cheap memory cards can hold your camera back.
It’s obvious what the GB on the memory card stands for and many people think that’s all they need to think about. There’s more to memory cards than how much storage they have. There’s read and write speed too. As cameras take larger photos with higher megapixels, the files increase in size. If the memory card can’t save the picture as fast as you’re taking them, you’ll find yourself waiting before you can snap the next picture. This is where that C shape with a number inside comes in.
SD cards are rated by class. When you look at the memory card, look for the C with a number inside to determine what class the card it. The class is a guaranteed minimum write speed. What this means is a Class 10 (C10) memory card ,such as the one in the image above, will save no less than 10 Mb/s. This means it’s fast. Your typical SD card is a Class 2, or only 2Mb/s write speed. You can buy a Class 2, 4, 6, and 10 SD card to meet a variety of needs. When using a high megapixel DSLR or recording HD video, I recommend using a Class 10 memory card. Depending on your camera, a Class 6 may be enough to get the job done as well.
A new standard has emerged in the past year or so as well, changing the C for class to a U – bringing consumers Ultra High Speed (UHS) memory cards. These UHS memory cards are much faster than a Class 10 memory card, starting from U 1 . Currently they only work in devices certified to support them.