But what about the 645D?

[Mark Roberts]

Paul Stenquist wrote:

>I can see a tiled back of APS-C sensors selling for less than 2K 
>in a couple of years.

Two APS-C sensors side-by-side would be 23.5mm x 31.4mm.
Close enough for me. (In fact, it's almost exactly the 3:4 aspect
ratio that I prefer over the traditional 2:3 of 35mm film.)
 
-- 
Mark Roberts Photography & Multimedia
www.robertstech.com
412-687-2835