带领大家看图学知识 学习如何正确使用三脚架······
1P:
2P:
4P:
5P:
6P:
7P:
8P:
9P:
10P:
11P:
12P:
13P:
14P:
15P:
16P:
17P:
18P:
19P:
20P: