The "eyeball camera" has a 3.5x optical zoom, takes sharp images, is inexpensive to make and is only the size of a nickel. (A higher zoom is possible with the technology.)
3
如果更喜欢拍摄远处的小鸟或者山脉,那么你应该选择一款光学变焦达200 mm或400 mm的相机。
If you like to photograph birds or touchdown passes, look for a long zoom that can extend optically to 200mm or even 400mm.