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Tips & Tutorials >> All Tips & Tutorials In Focus: Camera Basics- Part2

Camera Basics #2: Shutter Speed

2016-12-22
106
64.29 k
In this article:

When taking photographs, you want to have a good grasp of shutter speed and its effects on your photographs. What kind of effects can you create with a faster or slower shutter speed? Let us examine the effects of different shutter speeds with the help of the following examples. (Reported by: Tomoko Suzuki)

 

Shutter speed helps you “control” the movement of the subject in your photos

Points-to-note

- A faster shutter speed freezes the subject in motion.
- A slower shutter speed creates a motion blur effect from the movement of the subject.
- You can adjust the amount of light by opening/closing the shutter.
 

The shutter speed (also: exposure time) is the length of time when the shutter is open and light can enter the image sensor inside the camera. The shutter speed is indicated as 1 sec, 1/2 sec, 1/4 sec... 1/125 sec to 1/250 sec, etc.

A faster shutter speed reduces the length of time where light can enter, whereas a slower shutter speed increases this length of time. Therefore, the slower the shutter speed, the greater the amount of light that can enter the camera.

Shutter speed not only allows you to modify the amount of light, it can also change the way the movement of a subject is captured. At a faster shutter speed, you can completely freeze the action of a moving subject. Conversely, when you use a slower shutter speed, you can blur the subject in the direction of motion, and therefore capture the motion of subjects such as flowing water. In other words, the shutter speed allows you to control how the movement of a photographic subject is depicted.

 

Use shutter speed settings to change how the movement of photographic subjects is captured

EOS 5D Mark III/ EF24-105mm f/4L IS USM/ FL: 105mm/ Shutter-priority AE (f/14, 1/10 sec., EV+1.3)/ ISO 100
1/10 sec

 

EOS 5D Mark III/ EF24-105mm f/4L IS USM/ FL: 105mm/ Shutter-priority AE (f/8, 1/160 sec., EV+1.3)/ ISO 100
1/160 sec

 

EOS 5D Mark III/ EF24-105mm f/4L IS USM/ FL: 105mm/ Shutter-priority AE (f/4, 1/2500 sec., EV+1.3)/ ISO 400
1/2500 sec

 

Depending on the movement of the subject, adjusting the shutter speed allows you to control how the movement of a subject is captured – whether you use a faster shutter speed to freeze the action of a subject, or choose to capture its movement by using a slower shutter speed.

 

 

Concept 1: Motion blur and camera shake

There are two types of blur, ‘motion blur’ and ‘camera shake’, which originate from different sources. Motion blur occurs when the movement of the subject is faster than the shutter speed. The background is not moving, and so only the subject is blurred. Camera shake occurs when the hand that is holding the camera shakes as the shutter is released, causing the entire image to be blurred. In both cases, blur can be prevented by increasing the shutter speed.

EOS 5D Mark III/ EF24-105mm f/4L IS USM/ FL: 105mm/ Aperture-priority AE (f/22, 1/2 sec., EV+0.7)/ ISO 100
Motion blur: Only the subject in the centre is blurred.

 

EOS 5D Mark III/ EF24-105mm f/4L IS USM/ FL: 105mm/ Aperture AE (f/11, 1/6 sec., EV+1.0)/ ISO 100
Camera shake: The entire photograph is blurred.

 

 

Concept 2: The relationship between shutter speed and number of stops

When we increase the shutter speed from 1/30 sec to 1/60 sec, for example, this halves the length of time when the shutter is open and we refer to it as “making the shutter speed 1 stop faster”. On the other hand, when we decrease the shutter speed from 1/60 sec to 1/30 sec, we double the length of time when the shutter is open and therefore “slow the shutter speed by 1 stop”.

Generally, the shutter speed of a DSLR camera can be adjusted in intervals of 1/2 and 1/3 stops in addition to 1 stop. For example, using 1/2 stops, 1 stop can be divided into two intervals for shutter speeds of 1/30 sec, 1/45 sec and 1/60 sec, with an additional speed in between. The amount of light entering the camera can be more finely adjusted by using smaller intervals like these half-stops (1/2 stops).

 

 

Useful fact: The shutter speed range differs between cameras

Each camera model has predetermined upper and lower shutter speed limits, and you can freely adjust the shutter speed within that range of values. With a camera that has a high-speed shutter with an upper limit as fast as 1/8000 second, not only will you be able to freeze the action of rapidly moving subjects in your photographs, you will also be able to widen the aperture (i.e. lower the f-number) even in bright settings, and this can be used to your advantage when taking shots with bokeh. In addition, in auto exposure, many cameras have a lower shutter speed limit as slow as 30 seconds. If you want to slow the shutter speed even further, use the “BULB” function.

 

For a taste of what you can do with different shutter speeds, check out the following articles:
[Lesson 2] Adjusting Shutter Speed for a More Dynamic Effect
[Lesson 4] Understanding Shutter Speed
These two articles provide more examples of the different effects of fast and slow shutter speeds.

Camera FAQ #10: What is the optimal shutter speed for shooting nightscapes?
Tips on shooting vehicle light trails and city nightscapes.

[Part 1] Standard Technique Using Light Trails
More on light trails using long exposure photography, which is a method of decreasing shutter speed to increase exposure time.

Camera FAQ #14 : How Do I Take Panning Shots?
Capture the motion of moving trains and other speeding subjects with the art of panning. For those who want a challenge!

 

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About the Author

Digital Camera Magazine

A monthly magazine that believes that enjoyment of photography will increase the more one learns about camera functions. It delivers news on the latest cameras and features and regularly introduces various photography techniques.
Published by Impress Corporation

Tomoko Suzuki

After graduating from the Tokyo Polytechnic University Junior College, Suzuki joined an advertisement production firm. She has also worked as an assistant to photographers including Kirito Yanase, and specializes in commercial shoots for apparels and cosmetic products. She now works as a studio photographer for an apparel manufacturer.

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