What is shutter speed and aperture?

Chloe Ramirez January 26th, 2026 at 3:59 PM

Are shutter speed and aperture the same: a simple guide for beginners. In laymen's terms, your aperture is the size of the hole that lets light into your camera. And shutter speed indicates how long the camera opens its door to allow this light to reach your sensor.

Consequently, what is the relationship between aperture and shutter speed?

Aperture, as we mentioned above, affects the depth of field, or how much of an image appears sharp. Shutter speed also affects image sharpness, with slower shutter speeds leading to blurred images - whether that's caused by the subject moving or the camera not being held still.

Furthermore, do professional photographers use aperture priority? The quick answer to this question is yes they do. It is actually the reasoning behind using aperture priority that, for most professional photographers, prompts them to use this mode at all. Portrait and wedding photographers, in particular, choose to use aperture priority mode for the ease to control depth of field.

Additionally, what is aperture shutter speed ISO?

👉 For more insights, check out this resource.

EXPOSURE TRIANGLE: APERTURE, ISO & SHUTTER SPEED Each setting controls exposure differently: Aperture: controls the area over which light can enter your camera. Shutter speed: controls the duration of the exposure. ISO speed: controls the sensitivity of your camera's sensor to a given amount of light.

What are aperture exposures called?

👉 Discover more in this in-depth guide.

A stop is a measure of exposure relating to the doubling or halving of the amount of light. Image by Hamed Saber. The amount of light captured while taking a photo is known as the exposure, and it's affected by three things - the shutter speed, the aperture diameter, and the ISO or film speed.

When should you use Aperture mode?

You can also use aperture priority mode and adjust the aperture (f-stop) when shooting long exposures, combined with a low ISO in low light, a small aperture like f/20 will create a longer exposure, helping to blur the moving subjects like water.

What is the best aperture for night photography?

f/2.8

What affects shutter speed?

Effect of Shutter Speed on Photos

The longer the shutter speed, the more light strikes the sensor, resulting in a brighter image. And the faster the shutter speed, the less light reaches the sensor, resulting in a darker image. Besides brightness, shutter speed also controls how motion is captured in your photo.

How do aperture shutter speed and ISO work together?

Aperture refers to the opening in the lens that lets light in. The amount of light let in is controlled by the f-stops on the lens that you are using.
Shutter speed is how fast the camera records the picture or how long the shutter is open.
ISO is also known as film speed.

What are the three basic camera settings?

Being able to capture great visuals requires a little bit of an introduction to the three most basic camera settings: Aperture, ISO, and Shutter Speed. The combination of these three functions is present in most cameras and is imperative to operating your camera.

What does f 1.8 aperture mean?

The smaller the f-stop value, the more light will enter the lens. The bigger the number, the lesser the light. Therefore, an aperture of f1. 8 will allow a lot more light than an aperture of f2. 2, which causes better, brighter photography in low light conditions - night photos, some indoor photos etc.

When should you change ISO?

When to Change ISO

You want to manually increase the ISO setting on your camera when you are taking photos in dim light conditions AND you don't want to use the flash.
A slow shutter speed is what causes a blurry photo.
Camera shake is magnified by longer focal lengths.

What is camera ISO stand for?

ISO stands for the International Organization for Standardization — an organization that sets international standards for all different kinds of measurements. But, when in reference to your camera, the ISO is your camera's sensitivity to light.

How does ISO affect picture quality?

ISO, which stands for International Standards Organization, is the light sensitivity rating of a digital image sensor. As you increase the ISO, the sensor becomes more sensitive to light, which allows it to capture more light without slowing down the shutter speed or opening up your aperture.

What does F number mean in photography?

The f-number of an optical system (such as a camera lens) is the ratio of the system's focal length to the diameter of the entrance pupil ("clear aperture"). It is a dimensionless number that is a quantitative measure of lens speed, and an important concept in photography.

What is the best shutter speed for portraits?

around 1/200 of a second

How is shutter speed measured?

Shutter speeds are typically measured in fractions of a second, when they are under a second. For example 1/4 means a quarter of a second, while 1/250 means one two-hundred-and-fiftieth of a second (or four milliseconds). You can use a longer shutter speed by using external remote triggers, if necessary.

Where is the shutter speed on a camera?

Pressing the button at the top of the camera (it's actually called the shutter release) opens the shutter, and when the shutter is open, an image is recorded. When the shutter closes, the camera stops recording. The shutter speed, then, is just how long that barrier stays open to let light into the image.

How do you find the shutter speed on a picture?

Using Windows (right-click the file > Properties) and Mac (right-click the file > File Info), you van view partial EXIF of that image, shutter speed included. On both it's listed as “Exposure time”. Shutter speed should be there, it shows up for my pictures.

What are the standard shutter speeds?

The average camera speed is usually 1/60. Speeds slower than this are hard to manage as they almost always lead to blurry photographs. The most common shutter speed settings available on cameras are usually 1/500, 1/250, 1/125, 1/60, 1/30, 1/15, 1/8 etc.

What is a good shutter speed?

Between 1/500th and 1/100th of a Second

The shutter speed is fast enough to freeze slow moving or posing humans, but not so fast that you need to use a wide aperture or high ISO even in daylight. If you're not sure what shutter speed to use, somewhere around 1/200th of a second is usually a nice balance.

What are the shutter speed numbers?

Shutter speeds are expressed in seconds or fractions of a second. For example 2, 1, 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250, 1/500, 1/1000, 1/2000, 1/4000, 1/8000.