We can choose to create motion using slower shutter speeds and we can freeze the motion using faster shutter speeds. Make sure you checkout my new in-depth article The Ultimate Guide to Shutter Speed in Photography for more tips and lots of examples of how shutter speed is used in photography.
I captured this surfer at his peak — pulling off an aerial maneuver in a local surfing competition King of the Box. Click on the image to see the water droplets close-up. Higher shutter speeds work by opening and closing your shutter quickly. When you do this all action and movement in your frame stop or are frozen. Want to stop blurry images due to camera shake? It also controls how sharp your photos are, and lets you introduce lots of interesting creative effects into your shots. Let's look at what it is, why it's important, and how you can use it.
Shutter speed is an essential tool in photography and well worth learning. Image by Mikel. Inside your camera, directly in front of the sensor, is a small flap called the shutter. When you take a photo, this opens and closes to let light reach the sensor, creating your image. Shutter speed describes how quickly or slowly the shutter opens and closes again.
A fast shutter speed means that the shutter is only open for a short period of time; a slow shutter speed means the shutter is open for longer. Shutter speeds are measured in seconds, or fractions of a second. This is also known as the "exposure time", because it's the amount of time the sensor is exposed to light. Most cameras offer a wide range of shutter speeds, starting at just a few thousandths of a second and going up to several seconds.
SLRs also have a "Bulb" mode where you can hold the shutter open for as long as you want. In automatic mode, your camera will try to guess the best shutter speed to capture your scene.
Unfortunately it doesn't always get it right, and your photo can end up poorly exposed or blurred. A better option is to switch to manual mode and take control of shutter speed yourself. When doing so, you need to consider the following:.
Camera shake occurs when hand-holding your camera. No matter how steady you think you are, you can never stand perfectly still, and this slight movement shows up in your photos as a blurriness or lack of sharpness. Camera shake occurs when hand-holding your camera, and causes blurring of stationary objects. Image by Dean Ayres. You can avoid camera shake by using a faster shutter speed.
It's more noticeable when using lenses with a long focal length, so the longer the lens, the more you'll need to increase your shutter speed to avoid camera shake. When calculating this, use your lens's effective focal length, which is found by multiplying the focal length by your camera's crop factor. Motion blurring happens when you're photographing a moving subject, let's say a runner. If you use a slow shutter speed, the runner will move across the frame while the shutter is open, causing them to appear as a blurry streak in the final image.
Use a fast shutter speed to eliminate motion blur, or use it creatively to convey movement and speed. Bulb keeps the shutter open for as long as the shutter button is pressed down. The shutter speed you will need to use depends on the type of photograph you want to take. Often when you use a slow shutter speed, you will also need a tripod to help avoid camera shake. The photograph of blurred water shown above was taken with a shutter speed of 0.
At this speed I was lucky enough to hand hold the digital camera steady to avoid having to use a tripod. As seen in a recent lesson on light trails , night photography also requires a slow shutter speed.
0コメント