Of course, if Canon does come up with a EVIL system, I wonder how many people will want to use this adapter/tube? A small EVIL body and a heavy EF lens attached will likely result in an awkward combination.
but how many people with a lot already invested in EF glass might buy one just for a small carry-around with a niftyfifty or 35/2 attached?
or as a low-cost lightweight spare? if your 1D4 breaks, card fills up, battery runs flat, whatever, after you've hiked 3km through a swamp, at least you can whip out your EVIL and stick it on your 800mm and still catch that bird (if you don't take 2 eos bodies with you, of course).
the only reason i could think of, against the 'EF on Camcorder' idea, is that it might detract sales away from DSLRs, 1080p was a big selling point of the 5D2 on release.
If they come out with a 4k video camcorder with a mount shorter than 44mm, the adapter could be to use EF lenses on that.
- attaching pro cine lenses on an EF body (there's just room for an aperture in the 8mm to an Arri PL),
- a new canon Medium Format mount lens to an EF body,
- (a new canon pro cine lens with 50mm+ flange distance to EF bodies?),
- an EF lens to a new EVIL,
- an EF lens to camcorder body.
they're all options, and all possible products that could be covered by this patent. or none of them could ever see the light of day. if one of them ever happens, my money's on the EF-lens to EVIL body (but my hopes are on the canon MF - EF Body