Film fanatics know with almost total certainty that technology that reaches the cinema will eventually end up in the home. Usually it’s a matter of scaling things down to fit. With the latest wide-screen TVs and projectors, all of the various aspect ratios can be reproduced perfectly, as well as 3D. Sound? You can get every flavour of Dolby and DTS surround in a home-friendly form, limited only by the number of speakers you care to accommodate. But surely not the mighty IMAX?