5D3 over the Antarctic.
On Australia Day, the 26th of January, I flew over the Antarctic . It was a 13 hour round trip from Perth, Western Australia, with about 4 hours over the ice. I used a 24-105mm and a 70-200mm f2.8 Mk 2 lens. The two main problems in getting tack sharp pics was the twin glass in the windows and the jet engine exhaust, but given these photographic set backs, it was a wonderful adventure and I am reasonably happy with end result.