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The opposite is not true, however most older products cannot read memory cards made with newer technology. Most devices are designed to read a specific type of memory card or other storage method that is the current industry standard, along with many of its predecessors of the same technology, provided they are still available for sale.

Users should make sure that their camera or camcorder can handle this amount of storage, however, because some inexpensive devices cannot be used with high capacity cards. When it comes to video, this same size card can hold 60 two-hour videos shot at 30 frames per second (fps). Standard SD or SDHC Class 2 is usually fast enough for standard definition recording.Ī 32 GB card can hold 4,161 22- megapixel photos compressed or 416 photos of the same size and quality uncompressed. Most experts recommend Class 6 for HD purposes its speed is typically fast enough for most recordings and it's less expensive than a Class 10 card. Someone trying to record high definition video onto a slower memory card, for example, may find that he does not get the quality he expects, if the video records at all. Choosing a Class and CapacityĬards in the higher classes are useful for people who want to record high definition (HD) video or save many high resolution photos. It's best for the user to test the writing speed of his device and use the recommended class, however, because this performance can be critical for users. The classes also are set by the minimum DTS, not the maximum, and a user may get much better performance. Class 10: minimum sustained DTS of 10MB/secĬards in higher classes can transfer data more quickly in most cases, although this can depend on the card reader.Class 6: minimum sustained DTS of 6MB/sec.Class 4: minimum sustained DTS of 4MB/sec.Class 2: minimum sustained DTS of 2MB/sec.Manufacturers categorize these products according to the minimum sustained DTS, grouping cards into four different classifications: SDHC cards also offered a new benefit for consumers: classifications of data transfer speed (DTS). The new card helped satisfy the growing demand for high-capacity storage caused by the increasing use of high-definition video and high-resolution digital photography. SDHC cards were designed to be an improvement on the original Secure Digital (SD) memory card developed in 1999.