Exposure time
It’s the amount of time in which light is allowed to reach the sensor. Increasing exposure time allows you to get brighter images, but there are even some drawbacks: blur effects can appear when dealing with moving objects and noise always increases in longer exposure time.
With a longer exposure time, the object will be impressed on a number of different pixels, causing the well-known ‘motion blur’ effect.
Furthermore, long exposure times can lead to overexposure – namely, when a number of pixels reach maximum capacity and thus appear to be white, even if the light intensity on each pixel is actually different.
#77