I travel to southern africa every year, each year i pack lighter than the previous but i never leave any camera kit, i take 3 bodies 1dx2 5dsr and 7d2, 24-105, 70-200 2.8, 100-400, 300 2.8, and 500f4 with the 500f4 packed in the centre of my checked holdall. Camera bag is heavy but Virgin have...