Granted the clouds are different than the ones in the add for Lee Filters, and different (as well as the lighting on the rocks) than the one for the FIRST Joe Cornish link, but it actually looks like all THREE versions were shot by him with hs large format 5x4 inch (I was saying 4x5 because i'm a pompous American and we refer to the smaller length first  4x5, 5x7, 8x10, 11x14 - get it?) Ebony (brand, not color) camera with a Nikkor 90mm lens.

It was in his description in his persnoal gallery on his site.