Shutter speed is the amount of time the curtain in front of your camera sensor opens for light to get in. It is measured by fractions of a second and the longer the shutter speed duration the brighter the more exposure the photo is going to get. Oppositely, shorter shutter speed duration allow less time for light to get onto the sensor hence a darker photo.
As an illustration, a shutter speed of 1/60 is going to have more time for light to travel onto the sensor compare to shutter speed of 1/1000. You may wonder now does that mean a slower the shutter speed is going to let more light onto the sensor so I can take pictures in lower light conditions? BINGO! You are absolutely right!
To determine what shutter speed you need for different types of situation, I usually think 1/60 is the standard handheld speed for shooting non-moving objects. If I want to shoot something that’s moving but not too fast, say like a running horse, I’d use 1/250 shutter speed. For something faster like a car, if I really want to freeze the motion I’d use 1/500 and if you are planning to shoot a jet (as in taking pictures) then use at least 1/1000 of a second.
The same way goes with a slower shutter speed. To shoot shoot waterfall you would want to use 1 – 2 seconds shutter speed to capture the nice blurred water. Also, if you want to show motions in moving objects you can use slower shutter speed.
So by now you understand the basic concepts about ISO, aperture, Shutter speed and their affects on the exposure triangle, let’s head onto Step 5. Oh by the way, don’t forget to ask me questions if you need help!