Koho to zajímá, tak pročtěte forum na LL, je toho tam opravdu hodně o téhle akci a tom, co se "povedlo" Canonu s 5D MkII. Pokud jsem dobře pochopil (nečetl jsem všechno), tak je ten foťák fakt děravý, odcházely jen vzdušnou vlhkostí, několik jich mělo zkratované spouště, Err chyby, atd. Pár copy/paste:

Citace Původně odeslal LL
I believed that the temperature shift between outside & inside that day was slight enough not to worry about condensation and interestingly, the temperature extremes were quite modest: from a mild +5 C to normal inside +20 C.
Citace Původně odeslal LL
Precautions were taken against rain & moisture that were reasonable – but to no avail. In fact, two of the 5Dii's that died were used inside waterproof Kata bags – and they died within a minute of each other out on location.

Ovšem platí tahle poznámka:

Citace Původně odeslal LL
The camera is certainly not waterproof. Canon says just that in the manual. But it would be good if it were moisture–proof or even resistant. It does not appear to be.
Jsou tam mnohastránkové thready o technice a právě o 5D MkII.