wanting to buy digital camera memory card but confused by type H and M what's different? Here's straight from Wikipedia. Although they aren't god's word on everything this article seems to be reliable:
The original xD cards were available in 16 MB to 512 MB capacities. The Type M card, released in February 2005, uses Multi Level Cell (MLC) architecture to achieve a theoretical storage capacity of up to 8 GB. As of August 2006, Type M cards are available in sizes from 256 MB to 2 GB. However, the Type M suffers slower read-write speeds than the original cards.
The Type H card, first released in November 2005, offers higher data rates than Type M cards (theoretically as much as 3 times faster). As of 2006, Type H cards are only available in 256 MB, 512 MB, 1 GB, and 2 GB capacities, with 2 GB cards being sold in Japan before the rest of the world.[citation needed] Olympus says that its Type H xD cards support special "picture effects" when used in some Olympus cameras, though these software features are not intrinsically hardware-dependent. This dependence may be seen as a weak form of tying. However type H cards are required in newer models to capture video at high rate (640x480x30).
Due to changes in the cards' storage architecture, newer Type M and H cards may suffer compatibility issues with some older cameras (especially video recording). Compatibility lists are available for Olympus: Olympus America鈥檚 and Fujifilm鈥檚. The newer cards are also incompatible with some card readers.
I couldn't copy/paste the table but there are also differences in the read/write speed on the different xD cards. |
