« on: May 22, 2011, 10:09:15 AM »
There's two halves to that, the commercial side, and the technical side. On the technical side, the claim there is that Sony/Panasonic have jumped Canon in "affordable" big sensor video is partially right. The Panasonic AF100 is "only" a quarter the sensor area of a 5D2 so if you want the stronger shallow DoF effect, it is no substitute. The Sony F3 is more interesting I guess, but it is also over 5x the price of a 5D2. Fundamentally the 5D2 is still the only value really big sensor option around. But, there is at the end of the day a "good enough" sensor size argument too. In a similar way, APS-C is "good enough" for the majority of DSLR photographers, but that doesn't rule out the fewer cases where full frame is needed.
And in a case of possible optimism, who's to say Canon are not also working on their own interchangeable lens video big sensor camera? At the minimum they could just repack the 5D2 core into a better form factor. Maybe they're holding out for their next generation sensor to fix some of the shortcomings of existing sensors too.