[Flash 9 is required to listen to audio.]
(listen or read)
What is shutter speed/exposure time?
Shutter speed is the time that your camera measures the sensor to be exposed to the scene you are taking a picture of in order to get enough light onto it.
Darker situations require longer exposures and are more likely to get you a shaky photo.
As a rule of thumb, 1/100 for anyone and 1/25 of a second for an advanced photographer are okay to hand-hold.
Shutter speed stands in direct correlation with aperture/f-stop (more about this later).

