There are a few adapters that seem to be sold exclusively on eBay. I am speaking about the adapter's named "Cine", "HollywoodDOF", and "Totocine" sold by the seller toto486. These adapters are tempting due to the low price and most include rails, lens support, an achromat...however, most buyers seem to be reluctant to purchase these adapters as there are limited details and the seller(Korean) speaks very broken English making it is difficult to understand exactly what you are purchasing. Language barrier aside, HV20 forum member greatwhitenorth recently purchased one of these adapters and was kind enough to share footage, detailed images and a review! So now you have at least a bit more information on these adapter before you make a decision. Hope this helps.
"Paid 279 plus 75 for shipping to Canada. Set includes DOF adapter, rod set, achromat, choice of lense mount and step up ring.
Probably the only bad thing I can say about this is that the battery pack on the side is pretty cheap... especially compared to the adapter itself. It's just thrown on with some sticky velcro that you stick to the side... I'm going to attempt to make something a little nicer to hold the battery pack. Oh yeah... no charger for the battery pack.
The GG holder is made of black plexiglass and appears to be laser cut so it's clean. The GG is glued onto the GG holder, but can probably be easily removed. I had to make manual adjustments for the GG to get proper focus, but it's pretty easy. You have to move the move the GG holder up and down along machined aluminum pins that are held in by rubber 'socks'. I'll post some pictures shortly.
Shipping to Canada from Korea was super fast... about 3 days, hence the 75 dollar shipping fee."
for more visit http://hv20.com/showthread.php?t=24353