The main lens is fixed in place; there is no auto-focus, auto-aperture, or other gubbins.
主要镜头是固定的，没有自动对焦和自动光圈以及其他小配件。
2
Having grasped the basics of auto-focus, they rush to portray human suffering, attempting to find a niche in the hierarch of international journalism.
刚刚会用自动调焦的相机，就开始急于要去勾勒那些正在遭受灾难的人，想要在国际新闻摄影中占有一席之地。
3
You'll need to lock the focus if you have an auto-focus camera because most of them focus on whatever is in the center of the viewfinder. Try it yourself.