Two or three sets of clothes, some daily toiletries, a SLR camera with 70-200 lens time, about 20 days, how big a backpack do you need?

The question asked by the color donkey must be answered:)

70-200 seems to have only one big cow head. Generally, this kind of head is relatively large in volume and weight. If you want to use a bull's head, you won't use a low-end SLR. The overall weight cannot be light!

There are two solutions:

1. Buy a special camera bag with tripod suspension system like Le Shebao. However, the disadvantage of this kind of bag is that it only considers the space for putting the camera and does not consider the space for putting personal items such as clothes. It's okay to bring only 1-2 pieces of clothes that are not too thick, and other sundries will be tragic. Generally suitable for people going to road trip (things in the car), or professional photographers with assistants and other things. It is not suitable for colored donkeys and the backpack system design of camera bag is not as good as mountaineering bag. It is a painful thing to walk the mountain road.

2. Mountaineering bag+comprehensive protection. The 20-day trip is a long line, and the backpack should be at least 55L (my classmate took SLR to Nepal, Tibet, Xinjiang, etc. Four months), but the premise of using 55L bag is that your other things are light enough, such as quick-drying underwear and high fluffy down to keep warm. Otherwise, 55L will be miserable. But pay attention to protect the lens when carrying a mountaineering bag. A 70-200 lens bag is necessary. When putting the lens, it is sandwiched between soft objects such as clothes to prevent earthquakes. I suggest you tidy up all the things you want to bring, and then go to the outdoor store to actually see how big the bag is. Friendly reminder: take as little as possible when going out: the limit carrying weight of human body is 1/3 of body weight, and the reasonable carrying weight is below 1/4 of body weight. If you exceed this weight for a long time, you will know that you regret it, and there will be sequelae in your knee joint!

Hiking bags only recommend you to buy two brands: Osprey and Gregory (the three top brands in the world have their value, and the other one is no longer produced, only warehouse or second-hand). It is recommended to consider a lightweight backpack instead of a 2.5Kg bag. The camera is enough!

Finally, I recommend the necessary equipment of color donkey, strong oxygen chest bag (which can be used as the back of satchel), and I almost have a color friend around me. Specially designed for SLR, but it won't fit behind the telephoto lens. There is definitely no problem with the wide-angle lens or the medium-focus segment. The advantages are small size, easy to carry outdoors, and can be integrated with mountaineering bags into chest bags, freeing hands.