You can see it here

Thanks Ethan thats hugely helpful. Wow..the extreme is a pretty big beast.

I'm jealous of the extreme but......not of the rails. Makes it look fairly hefty to lug about.

I can't help but think somebody should make up a formed/fitted support for the HV20/Letus combo, that keeps it as compact as possible. Thats a big appeal abotut this setup for me.

Doe the Letus have a 1/4 x 20 hole for mounting it (can't see from the pics)

Thanks again for taking the time to post those.

Hi Ethan,

This would solve your battery issue.

http://www.jetsetmodels.info/pics/hv20_support.jpg

Ethan, the reason the DX lens vignettes more is that it is designed to project the image on a much smaller sensor than the full size 35mm frame.

Looking at your photo, how do you hold the whole setup? It would have been extremely helpful if it had some sort of top handle.

Can you please describe your shooting position?

Alastair - The extreme is big and heavy for the hv20. If you're wanting portability then the mini might be just what you need.
The adapter itself has a thread on the bottom that attaches it to the rail support but I don't know the size.
Great find on the hv20 to rails support bracket. I'll have to check that out.

Yang - I'll know more about how I'll hold it in practical shooting situations after this weekend. I'm planning on bringing it along with me to a wedding to play around a bit. Right now I'm holding it much like a football with my right hand under the adapter itself and the underside of the camera support resting on my forearm. When I need to go higher, I'll just rest the back of the rails on my shoulder supporting the front rails with my right hand and focusing with my left. Very ENG camera esque. I also see myself busting out the tripod a lot with it. I'll know a little more after this weekend.

Oh and guys, I'm going away for a while. I really need to get some work done.