The author writes: In the ranking of the most physically demanding test of this year will undoubtedly 10-day track Langtang, Nepal. It was hard, but I gave myself a set to go, though not fast, but only go up to the mountain pass. Then the extra kilogram would like to put head over heels on a slope, especially the heavy 70-200 lens - it would go down well, "sausage". But thanks to the incredible natural beauty of Tibet and common sense, all the lenses I have conveyed to the end and are now happy to watch the footage.