The blog's source also stated that the two cameras were fitted with industrial-grade Panavision lenses, which are typically used for filming movies. Considering that this dSLR can record full-HD videos at 30 frames per second, it is quite possible that the camera was used during the movie production.
Check out this for bragging rights. A 5D Mark II with a huge Panavision lens attached. (Credit: Planet5d.com)
Another blog, Canon Rumors, reported that the production unit of Iron Man 2 has purchased several EOS 5D Mark II cameras. However, it wasn't stated whether these dSLRs would be used to film the movies. Readers have commented on both blogs that instead of using the snappers for shooting the flicks, chances are they would be used for recording behind-the-scenes footage to be included in the DVD or Blu-ray versions.
Currently, the imaging industry is seeing a shift to integrate video recording into dSLRs. Systems like the Micro Four Thirds are catching up, too, with the Panasonic Lumix DMC-GH1 offering a 1080p-quality video-recording feature. Surely, these technologies will improve over time and we won't be surprised to see the next Hollywood hit filmed entirely using a dSLR.