在自动模式和程序模式当中，相机自己会决定快门速度。
In auto mode and program mode, the camera decides what shutter speed is needed.
本系列的第一部分当中，数码单反相机中的程序模式已经帮助你将自动模式丢到了一边。
In part one of this series you kicked your digital SLR camera's auto mode to the curb with the help of program mode.
程序模式实际上是一种半自动模式，P代表可编程化的拍摄模式。实际使用中，相机仍然工作在自动曝光模式。
The “P” mode is in reality a semi auto mode, that is the P is the first in the line of programmed modes, but in practical use, the camera still continues to do auto exposure.
在自动模式和程序模式之下，相机一般会选择一个不大不小的光圈和快门来进行适当的曝光，但这样既不会有任何极端参数，也就更失去了创造的机会。
In auto mode and program mode, the camera usually chooses middle-of-the-road aperture and shutter Settings, getting a good exposure but avoiding any extremes-and any creativity as well.
类似的，丰田（Toyota）在其普瑞斯轿车（Priushybrid）上使用一种后置相机实现自动停车功能，虽然需要由驾驶员在触摸屏上输入一些预编程序。
Similarly, Toyota uses a rear-mounted camera for the self-parking feature on its Prius hybrid, which can park itself, albeit with some pre-programming from the driver via the car's touch-screen;
类似的，丰田（Toyota）在其普瑞斯轿车（Priushybrid）上使用一种后置相机实现自动停车功能，虽然需要由驾驶员在触摸屏上输入一些预编程序。
Similarly, Toyota uses a rear-mounted camera for the self-parking feature on its Prius hybrid, which can park itself, albeit with some pre-programming from the driver via the car's touch-screen;
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