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The only thing is you will need a separate audio recorder. Oh and of course it allows you to record 1080P video at up to 30 fps. The EV lock allows you to make those changes quickly, without affecting the brightness of the exposure. While for jets you want as fast as possible. With aircraft you really want to keep the shutter speed slow for propellor driven aircraft. The other thing that I really is being able to lock an exposure value in manual mode, and then be able to change the shutter speed or aperture and have the camera adjust the other so that the exposure remains constant. This also removes some overhead on the CPU. That means you can turn global draw off in the Magic Lantern menus and rely on a clean, uncluttered Canon preview whilst shooting video. I use it quite a bit for backlit aviation subjects, where I want details on both the top and bottom side of the aircraft, and also the sky. 10bit is a huge benefit on these cameras, giving 1.85:1 continuous, that has framing very similar to 16:9. That can be very useful if you are shooting subjects where you need to maintain detail in both the shadows and highlights. It does offer DualISO which will expand the DR by up to three stops. There are not many ISO improvements, that is not really possible.
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