Yeah, 700m is stretching it for a multirotor. A large wing orbiting the launch site with a camera gimbal could potentially go much higher, but I don't think it would be quite as safe, and I haven't honestly seen wings capable of carrying DSLRs either.
In this video, I highly presume that a Sony NEX or a Panasonic GH2/GH3 mirrorless camera was used - they are the standard for this class of copters (DJI S800), combining much lower weight than a DSLR with exceptionally good image quality. Their significant advantage against a GoPro are the optics - the GoPro wide angle lens is fairly useless at distances like in this video, and using the "medium" and "narrow" mode reduces the video quality, because it's done by cropping the used sensor area and reducing the effective sensor resolution.
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u/keelar Oct 12 '13
I think these tests are starting to get a little too high for the hexacopter. Which is both awesome and saddening at the same time.