CPM Film Tools make sick HDDSLR rigs for a fraction of the cost of other companys. Right meow I'm looking at the DSLR cage and the Aviator cage. Looks like it would be really good for filming skiing because of the handles, but great for a cinema rig too. This rig is my inspiration right meow, and I plan on building one similar in the near future:
And heres a link to their site:
http://www.cpmfilmtools.com/
People on Cinema 5d and DVXuser seem to have great reviews, and the owner of the company is actively posting on DVXuser, answering questions, showing that they have great customer service.
DVX thread:
http://www.dvxuser.com/V6/showthread.php?t=206311&page=6
Cinema 5d thread:
http://www.cinema5d.com/viewtopic.php?f=21&t=11347&st=0&sk=t&sd=a
