What is a memory card SD/SDHC?
A CF card is a compact flash card. CF cards are 43x36mm, whereas SD cards are about half that size. SD cards, also known as Secure Digital cards, are a different memory card. One of the most important differences is that the size is different, so you cannot use them interchangeably. They are flash memory cards of a particular shape and size developed for use in portable electronics such as a digital camera. An SDHC card is a High Capacity SD card with 4GB or more. More information on a CF card can be found here: http://en.wikipedia.org/wiki/CompactFlash More information on SD/SDHC cards can be found here: http://en.wikipedia.org/wiki/SD_card If your camera takes CF cards, but want to buy an SD card for it, you can purchase a CF card adapter like the one that Konica Minolta or Eagle Tec have put out that allows you to convert an SD card to a CF card.