Apart from some early traditional photography experience, which I value too, but more because of the (partially) non-digital quality, I recall clearly my first semi-pro (for the time) High Definition Video camera: the Sony HDR-HC3E
. In 2006, that was pretty much new. Pro HD cams were even not so many around at all yet, and this one could actually make 1080i that worked.
I pretty soon afterwards has also a good monitoring note book that would connect to this cam over firewire with mpeg-2 :
A Dell Precision M90
with a pro Quadro card that had 1080 decode ability, and an actual 1080 HD screen, which was the first notebook in the world to offer this!
From 2006 on I learned a lot about applying prior knowledge to this early HD setup.