On Sat, 2 Feb 2002 15:37:46 -0500, "The Horta" wrote:

>MiniDV is 4mm DAT basically, just 1/2 the size of the 8mm DAT aka D8.
>
>Smaller tapes with smaller capacity.

I thought Mini-DV was 6mm-width...;-)
Depending on the recording medium tape quality
and actual total area available, there may be
little advantage either way in terms of "capacity"
("data-density" related to medium limits - and
both Mini-DV and D8 hold one hour of video in
SP-mode...).