Peabody wrote:
Well, maybe someone will come up with a superfast version of
the current SD-to-CF adapter so SD cards can be used for at
least the medium speed requirements at low cost. But SD is
a serial device while CF is parallel, and then there's the
extra controller used in the adapter process. So the speed
you would get from even the fastest adapter might not be so
great.


Just remember that we switched from parallel (P-)ATA to serial
SATA. Serial connections have speed advantages over parallel ones.
The controller will be the limiter in the adapter.

It's not clear to me that video requires the fastest write
speed, since the video is compressed. My guess is the
stream of continuous shooting in RAW would present the most
rigorous requirement, particularly for those big 20+mp
cameras.

You can always use a buffer for shooting in RAW, once it's full
you just have to wait a bit. Try that with video ...

-Wolfgang