AbelCineTech just started selling the 5D Mark II and Canon lenses. So of course I've put together a Arri mattebox kit for it. It's the MMB-1 with a custom riser, belows back, and step-down/up rings. Check out the video on our blog -

Canon 5D Mark II & The Arri MMB-1 Mattebox | CineTechnica (http://blog.abelcine.com/2009/08/10/canon-5d-mark-ii-the-arri-mmb-1-mattebox/)

Andy any ballpark figure for cost on this?

Jerry

Fine for tripod, but for shoulder mount, you will need to get get camera offset, with a a viewfinder magnifier and longer rails to mount shoulder pad... something like this:

My Rig By Chris Barcellos on Vimeo (http://www.vimeo.com/5228515)

Admittedly a bit dated and low budget, but this is general idea where a total system should go.

The kit is approximately $2,400. It's well suited for a tripod, but I'd also use the MMB-1 with a handheld rig with the proper offset.