In another, they used a telephoto lens to take pictures of a set of keys on a cafe table from the roof of a university building. 在另一次演示中，他们站在一所大学的楼顶上，通过远摄镜头拍到了咖啡桌上的一串钥匙。
Telephoto lenses tend to be difficult to steady. 长焦镜头是很难稳定的。
When shooting in wildness, photographers usually shoot with long telephoto lenses from a distance. 野外拍摄时，一般都在远处使用长焦镜头。
