Thank you all for the feedback so far. Some comments:
- The HD video sequences were filmed with a Canon HV20 on a Manfrotto
mount. The mount is too heavy and I've bought a lighter Giotto mount
since. The HV20 is tape based. Disk based recording has a 10,000 ft.
altitude limit so those are out; the chip recording systems are almost
there, but don't quite have the visual quality (but probably will in
another year or so). There are also issues of mixed editing of chip
based video and tape, not an issue for most people.
- The movie editing for "Looking Further Out" was done using iMovie on
a mac. It is greatly preferred to edit HD on a mac as it is
problematic on a PC. The Crater Lake movie was done on Keynote, a
presentation program on the mac with voice overlay, then output as a
movie.
- The ratio of work time into each piece vs. output is currently
around 80:1. I look to reduce this to 40:1 as I find the format that
works for me. The point is that it's a fair amount of work, and
although I had some great technical support, to be realistic, you need
to practice and plan what it is you're trying to do. But it is well
worth it.

Kemp