I think most of today's camera manufacturers are just followers, not industry innovators. Leica was the first innovator by having the guts to use an existing 35mm cinefilm (36mmx24mm) used by the movie industry many moons ago and building a small 35mm camera to use it. Since then nothing really innovative has come along. At least Kodak did make a bold attempt with their APS film system until the digital age eases it out of the market. Today's dslr is a poor carbon copy of the principles used in the Kodak APS film system. At least in the APS you use one film on one camera for 3 different formats, with 2 of the 3 formats being achieved by cropping. Now its digital replacements come with 3 or more formats but with 3 or more different cameras! Compounding this is the misfits of lenses on the various formats. But all is not lost. The digital mess we are in now is because the market is just getting to grips with the digital age. In time there will be either one or two formats. The easiest one will be a full frame 36mm x 24mm sensor camera. And if the sensor is good you can turn this full frame sensor camera into as many formats as you like, provided they are are smaller than full size, by doing the cropping yourself with the same camera. Imagine that by just using one lens, say 28mm, on a full frame sensor camera, you can use the same 28mm lens to take a 280mm telephoto shot simply by cropping it by 10 times. Now, isn't this a simpler way to do what the 3 or more different sensor size Canon cameras are doing? The same principle is used in those business card size pocket cameras. The next step could be even more drastic. Get rid of the mirror and the prism, shrink the thickness of the sensor, and make the whole thing more energy efficient. With all these you might eventually get a camera with the smallest lens to sensor distance, which are great for designing the ultimate in lenses as well as making available to you all the world's interchangeable lenses, by means of an adapter.