The Difference Between xD Picture Card Type M and Type HThe xD Picture Card was developed by Olympus and Fujifilm and released in mid 2002. The xD card then had improvements made and labeled Type M and Type H. The improvements of the xD flash memory technology where done to increase storage capacity and/or speed performance.
- The original xD format held between 16MBs and 512MBs.
- The following version was Type M. This increased storage capacity to 8GBs and released in the beginning of 2005.
- The next format version, Type H, increased performance of data transfer and has a storage range of 256MBs to 2GBs. Type H xD card was released in late 2005.