Funny the red camera has so expensive lenses that people are using adapters to use cannon lenses on the red.
There's actually less of that going around than the Birger mount indirectly implies. PL mount lenses are so much more suited to cinematography than still camera lenses. Vastly smoother focus, hard stop points for infinity and critical focus, far less breathing when focus is pulled, better build quality and ruggedness, and they come in matched sets. I've AC'd for RED shoots with Canon EF, Red Zooms (also PL mount), and Zeiss Super Speeds (these most often). The lens rental prices are not that different. I'd take the Zeiss lenses any day, if you are going to pop the coin on going with RED it just seems silly to me to not get the good glass.
Conversely, some folks are willing to spend $4K on a 7D which has been modified with a PL lens mount.
Correction, 5ish for a built camera with warranty, 3ish for the kit:
http://philipbloom.net/2010/02/19/modified-7d-pl-mount-camera/
In the end, budget decides essentially everything. Smart producers will know where to get the biggest bang for their buck. What's funny to me is that when Canon comes out with something that shoots RAW (compressed or otherwise) on a FF35 sensor (or aps-c, whichever) with all the various features that folks are demanding in a rugged, sturdy, and ergonomically usable body, it's *not* going to be at the 7D price point.
I guess what I'm saying is that the cartoon would be more funny to me if it were more sincere, but as is, it's making fun of something that doesn't exist -- a producer who has the option of a proper shoot, but chooses DSLR. Or, maybe I'm wrong, maybe there are people like that out there, but I haven't met them.
Sadly, there are people are there with proper budgets that just want to shoot 5d2 or 7d simply because it is the big hot thing. Heck, that is part of what happened with RED cameras. They're semi-ubiquitous at a certain budget level because of the same process that is happening with the dslrs. Hype.
I don't have a problem with whatever camera someone wants to use, personally. Technique is far more important than gear, imho.
Pros and Cons of DSLR has been sort of hashed out elsewhere. I'm hypothetically on board, but I'm waiting because what I want isn't quite out there yet.