I can easily see this working for digital film making, but you know what, that other type of film making, the one where they use ACTUAL film, can in no way adapt to a 60 fps format. An IMAX camera uses 65mm film with a negative image area of 69.6 × 48.5 mm, ergo the amount of film you need for a single second is overblown from 1,68 meters to a whooping 4,2, and film is expensive, also it weighs, also very pretty results. And there's the fact that film remains the preferred method for shooting motion pictures in Hollywood. Digital is certainly on the rise and will eventually overshadow it, but this will take time and when it is achieved Cameron's idea could easily become reality.