from cnet we have:
The specs on the two cameras, however, show the lower-resolution version to be faster: 1.4 seconds per capture for the H3DII-39 over 1.1 seconds for the H3DII-50. That could simply be implementation-specific, though.
Indeed, 1.4 seconds is a very long time to not move. Only useful for objects and scenery, certainly not going to do people or wildlife.
The times refer to saving the photos, not exposing them.