Shutter speed is how long the camera’s sensor is exposed to light, shown in seconds or fractions such as 1/250. Fast speeds freeze motion, and slow speeds let movement blur. It also controls how much light reaches the sensor, so it works together with aperture and ISO.
Reading the Numbers
A setting of 1/1000 means one thousandth of a second, which is very fast. A setting of 1/30 is much slower, and 2″ or 2s means two full seconds. Each step in the usual scale, such as 1/250 to 1/500, halves or doubles the light.
Common Speeds and Their Uses
| Speed | Typical use |
|---|---|
| 1/1000 or faster | Sport, birds, fast action |
| 1/250 to 1/500 | Walking people, children, pets |
| 1/60 to 1/125 | General handheld, still subjects |
| 1/15 and slower | Panning, low light with support |
| Seconds | Waterfalls, night scenes, light trails |
These are rough guides, not rules. Subject speed and distance change what you need.
Avoiding Camera Shake
A common guideline is to use a shutter speed at least as fast as one over your focal length. With a 50mm lens, aim for 1/50 or faster, and with a 200mm lens, 1/200 or faster. Stabilized lenses or bodies may allow slower speeds, but the guideline remains a handy rule of thumb.
- Hold the camera close to your body with elbows tucked in.
- Press the shutter smoothly rather than jabbing it.
- Use a tripod and a timer or remote for slow speeds.
Practice Exercises
- Set shutter priority mode, usually S or Tv, and photograph a moving car at 1/1000, then at 1/60.
- Pan with the car at 1/30 and see how the background streaks while the car stays sharper.
- Photograph running water at 1/500, then at one second on a tripod and compare the silky effect.
- Try a handheld portrait at 1/125, then at 1/15, to feel the limits of your hands.
Keep in mind that slow speeds let in more light, so in bright conditions you may need a smaller aperture, a lower ISO or a neutral density filter.
Mechanical and Electronic Shutters
Many cameras have both a physical shutter and an electronic one. The mechanical type is reliable with flash and avoids distortion on fast subjects, while the electronic type is silent and reaches very high speeds. Which to use depends on the scene, so check your camera’s guide for any limits on flash speed.
FAQ
What is the best shutter speed for portraits?
For still subjects, 1/125 is a common safe choice. For active children, go faster.
Why are my photos blurry even at fast speeds?
The cause may be missed focus rather than shutter speed. Check that the focus point is on the subject and the autofocus mode suits the movement.
The Short Version
Fast shutter speeds freeze action, and slow ones show movement as blur. Match the speed to your subject and your support, and remember that it trades off against aperture and ISO.
