Canon's line of DSLRs are used by professional photographers in a wide range of different environments. For that reason, each one has to be able to withstand some pretty extreme conditions. But just how durable are they? The people over at DigitalRevTV were posed that very question. To provide an honest answer, the crew took a working Canon 7D and did everything it could to break the camera including: hitting it with a trunk, dropping it down multiple flights of steps, submersing it in water and then freezing it, and setting it on fire.