What's The Best Shutter Speed To Choose?
The main settings that will affect the overall look of a photo are aperture, ISO and shutter speed (yes I know there there are more, like your lens, white balance and blah blah blah, I get that... shut up nerd.) Today we are going to take a look at shutter speed and what I have learned so far about how it affects your photo.
Shutter speed has two primary functions in a photograph; one is technical and the other is aesthetics. In the technical sense, the shutter will allow more or less light into a photograph. Your shutter speed determines how much light is allowed to hit the camera's sensor which helps create your desired exposure. The slower the shutter speed, the more light is allowed to hit the sensor. A faster shutter speed allows less light from hitting the sensor and creates more exposure of the image. In the aesthetics sense, a faster shutter speed will help capture an object in motion, while a slower shutter speed creates a blurred effect. In the image above we have a 10 second exposure time that allows for the waves to appear blurred and wispy. A shot like this must be taken with a large/small aperture, on a tripod. The slightest bump of the camera can cause the entire image to be blurry.
So how do we measure shutter speed? The shutter speed is measured as seconds, or a fraction of a second. A shutter speed of one second (1"), means the shutter allows in light for one second. 1/2" means it lets in light for a half a second, 1/400" means it lets in light for one four hundredth of a second. Often times you will see your camera display a whole number as its shutter speed such as 100 or 800. That is just the camera company's way of saying it's actually 1/100 or 1/800 of a second without having to try and display the "/".
Most high end cameras (Canon 5D series, Sony AII series, Nikon D850 etc) will have a shutter speed range of 1/8,000-30 seconds. Crop sensor or mid level cameras will have a shutter speed range of 1/4,000-30 seconds and lower end cameras will vary depending on their quality. (the iPhone 7 goes from 1/2000-1/3).
Most cameras also have "bulb mode." At this mode the user can either manually open and close the shutter, or they can set a timer that is greater than 30 seconds for super long exposure shots.
Each of the numbers below represent a full stop. The term "stop" in photography is when you either double or halve the amount of light in the photo. So a shutter speed of 1/250 will allow twice as much light as 1/500. On many cameras there are additional stops/shutter speeds like 1/50 or 1/40; that just means they are a fraction of a stop.
1/8000- Stop super fast motion like the prop on an airplane, used on bright days when you want a shallow depth of field
1/4000- Stops bird's in flight
1/2000- Stops water droplets
1/1000- Stops most water, cars, wildlife in motion
1/500- Used as the baseline for creating stop action in humans, birds will be blurry
1/250- Humans in motion become blurry
1/125- A good setting that offers a good combination of "motion" and clarity for humans performing tasks ( example: a swinging hammer might be blurred in motion while the head is crips and still)
1/60- This tends to be the lowest setting for everyday handheld shots. Any slower than this and you risk having the image blurred due to the shaking in your body/hands. Here humans in slow motion are still relatively crips. Good for showing slight motion blur of humans running, cars driving etc.
1/30- Good setting for "panning" this is where you keep the camera fixed on a moving subject and take photos creating a look of the object being in motion
1/15- Photography from this point on will almost always be on some sort of a support system such as a tripod or monopod
1/8- A good place to start to get fast moving water to appear wispy in shots
1/4- A good place to start for fireworks
1/2- Great setting to capture cars, trains etc in motion
1"- Creates that "dreamy" look for waterfalls, rivers etc
2"- Good setting to start at for coastal sunset/sunrise shots where you want the incoming and outgoing water to appear flatter (see first photo). Good place to start for astrophotography (stars)
4"- Typically reserved for night shoots. Great setting to get trailing night lights on cars
8"- Stars can start to become slightly blurry at this setting
15"- With the right ISO/aperture setting this is a great setting for stars. Also, water becomes "flat" at this setting
30"- Good setting for "light painting." Star streaks begin
Mark from Minnesota asks "So why don't I just take all my photos I want to be super crisp with stop action at the highest shutter speed my camera will allow?" Thanks for the question Mark....
Remember when we said that each one of those numbers above will halve or double the amount of light that is allowed to hit the sensor? If we always shoot at a speed of 1/4000 or 1/8000 we may end up having a photo that is too dark. When we add or subtract light from the image via shutter speed, we have to compensate with either ISO, aperture or both to get the proper exposure. Both ISO and aperture can also make a photo brighter or darker, but when you change either setting it can also change the effect of the photo. So if you shoot indoors at 1/4000 you would need to either bump up your ISO or bring you aperture down below f/4 which would create a really shallow depth of field or add a lot of noise to the photo.
In short, there is no "best" shutter speed to use. Different shutter speeds create different types of photos. Slower shutter speeds let in more light and can create motion or blur while higher shutter speeds let in less light and create less blur.
If you're looking to learn more about shutter speed trying turning your camera's dial to "S" or "Tv". This will make shutter speed the priority for your camera. On this setting the camera will hold your desired shutter speed and adjust aperture and ISO to get the best photo. When I am shooting from a helicopter or moving platform I will put my camera on this setting and then set my shutter speed to 1/100 or higher. That way I know my photos wont be too affected by the motion of the helicopter or vehicle I am in. Practice shooting the camera on the shutter priority mode and adjust the shutter speeds as you take various shots. This will allow you to focus on learning one aspect of photography.
If you'd like a good exercise, go out and find a fast moving stream of water or a waterfall. Set up the camera on the tripod, focused at the moving water. First, take a shot of the water at your camera's fastest shutter speed setting (1/4000 or 1/8000). Then reduce the shutter speed by one full stop (see the chart above) and view how the water changes as you slow down the shutter speed.
With all this being said, lets look at a couple of examples:
One important thing to know is what level you can take photos at while holding the camera in your hands. Above, I said 1/60 tends to be the slowest shutter speed you can have and still get crisp shots while holding the camera in your hands.... I kind of lied, sorry d-bag move. The reality is the more zoom your lens has, the faster your shutter speed should be to get a crisp shot. This is because a magnified lens will exaggerate movement. Imagine you are looking through a set of binoculars, you always have to hold them very still because every slight movement creates motion blur. This transfers to zoom lenses. As a good rule of thumb you shouldn't drop below your lens' focal length in shutter speed. For instance, if you're using a 50mm lens, you shouldn't go below 1/50 seconds if you're holding it with your hand. If you have a 70-200mm lens, don't drop it below 1/60-1/80. If you have a 400mm lens you will want to run a fast shutter speed of 1/400.
One thing that will change the above rule is if you have a built in stabilization to your camera/lens. These are designed to reduce your body/hand's vibrations of the camera and lens.
Well, that's all I know for now, I will update this post as I learn more!