I just returned from a month safari in Kenya using Sony photographic equipment. In December 2018 completed my migration after 23 years with Canon to Sony. I moved to Sony mostly due mirrorless innovation, light weight and high quality lenses. I carried a Sony a9 with a power grip, a Sony7RIII, a 100-400, 400 f 2.8 and a 1.4X and an Apple 6 for landscapes. Minimizing weight and size is a must when flying in bush planes.
I had taken this Sony Photographic gear during the last nine months from the humid hot tropics of Brazil, to below freezing temperature this winter in Yellowstone and now through the dusty and bumpy roads of Kenya and had no failures.