Memory Cards

[greyman]

Olympus XD picture cards. What is the difference between a type H and a type M

[gsr600]

Type M/M+ and Type H cards
xD-Picture Card, 1 GiB, type M
xD-Picture Card, 512 MiB, type H
A size comparison of an xD-Picture card with a MicroSD Card

The original xD cards were available in 16 MiB to 512 MiB capacities. The Type M card, released in February 2005,[8] uses multi-level cell (MLC) architecture to achieve a theoretical storage capacity of up to 8 GiB. As of June 2010, Type M cards are available in sizes from 256 MiB to 2 GiB. However, the Type M suffers from slower read/write speeds than the original cards.

The Type H card, first released in November 2005,[9] offers higher data rates than Type M cards (theoretically as much as 3 times faster). As of 2008, Type H cards were only available in 256 MiB, 512 MiB, 1 GiB, and 2 GiB capacities. Both Fuji and Olympus discontinued the production of Type H cards in 2008, citing high production costs.[10]

The Type M+ card, first released in April 2008,[11] offers data rates 1.5 times that of Type M cards. As of 2008, cards are available only in 1 and 2 GiB capacities.

Olympus says that its xD cards support special "picture effects" when used in some Olympus cameras, though these software features are not intrinsically hardware-dependent. Type H and M+ cards however, are required in newer models to capture video at high rate (640×480 @ 30fps). Due to changes in the cards' storage architecture, newer Type M and H cards may have compatibility issues with some older cameras (especially video recording). Compatibility lists are available for Olympus: Olympus America's[12] and Fujifilm's.[13] Newer cards are incompatible with some card readers.

[gsr600]

hope that's clear. lol