Interesting thread about using 2 5dmk2's to make HDR video.

www.engadget.com/2010/09/09/hdr-video-ac...s-is-exactly-what-i/

Ok, so how in the world did they achieve this? How do you position the two Canon 5D's so that they are filming from the exact same vantage point? How do you combine the two videos without ghosting, or at least a slight misalignment of the positioning of the image? A "Beam splitter" what is that and how does it work?

Don't know, but here is something interesting:

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I wonder if it would be possible for canon to implement this via firmware in future cameras. You could capture a scene at 60fps+ and alternate each frame under/over exposed.

I had read they were working on per-pixel exposure for still photography. Which would achieve a similar effect to HDR. Possibly could be used for video, too.

Looks like they used a beam splitter....you were right!!!

I liked the way humans appear with the HDR look. Anyone got a spare beam splitter?

Seems kind of basic, but even for vets here a few good tips on DSLR film making. As an example, I see DSLR DPs using cheap cards all the time. Saves a buck or two at the register, but easy to have the card bail on you because of a buffer over-run. The you'll wish you had spent that extra $20-$50.

gadgetwise.blogs.nytimes.com/2010/04/15/...ideo-with-a-d-s-l-r/