How To Change Aperture On Canon Camera: Camera Hacks

The equivalence of an eye pupil on your Canon Camera is the aperture. As a photographer, you should know how to change aperture on Canon Camera.

An aperture is a hole through which natural or artificial light reaches the lens. If this hollow is large, it will allow more light onto the lens.

On the other hand, a small aperture will let less light enter and reach the camera lens.

Another camera feature that relies on the aperture is the depth of field. Depth of field is how much of the foreground and background appears in the camera’s focus.

If the aperture is high, the depth of field will be smaller and vice-versa. One way to shoot the best photos is to learn how to control the aperture on your Canon Camera.

Whether you have the Canon Rebel series or the Canon EOS series, changing the aperture is easy.

How To Change Aperture On Canon Camera: Different Easy Methods

As a happy owner of a Canon Camera, you should know the steps to follow when changing the aperture.

Being an idiot-proof procedure, everyone should perform it. We will outline the steps for changing the aperture on each Canon camera series below.

Changing aperture on a Canon Rebel Series camera

  • Step One: Take your Canon Rebel Series camera and set the manual mode. 
  • Step Two: Press the Shutter Release button until you activate the Meter. Once you do, stop pressing. 
  • Step Three: Access the AV button at the back of your Canon Rebel Series. Then, hold it down with your thumbnail.
  • Step Four: With your index finger, turn the Quick Control Dial. Turn it to the left to obtain a large aperture and a small F-stop value at once. Turn it to the right to get a small aperture and a high F-Stop value at once. After that, you have finished.

Changing the aperture on a Canon EOS Series camera

  • Step One: Take your camera and Press the Shutter Release.
  • Step Two: Hold down the button until you activate the Meter. 
  • Step Three:  On the back of your EOS series, locate the Quick Control Dial. Turn the large Quick Control Dial to the right or left with your thumbnail. If you turn it to the left, you will get a big aperture and a small F-stop. If you spin it to the right, you will get a small aperture and a large F-stop.
  • Step Four: With your EOS series camera aperture ready, finish the process and use your camera as you like.

As you can see, changing your Canon aperture is a straightforward task. If you still have the owner’s manual, consult it to know different parts of a Canon Camera.

Doing so can simplify the above steps. After the change, you will notice a difference in how your images look. Below are other things to understand.

Image brightness

It helps to control the level of brightness in an image. If your images are too bright, your aperture is too large.

So it is passing plenty of light into the camera lens. Turn the dial to the right to make the aperture smaller for less light entry.

Equally, turn the dial to the left if your Canon camera produces too dark images. That will enlarge the aperture, which will allow more light to reach the sensor.

Image sharpness

If you need a sharper image, you now need to understand how aperture and depth of fieldwork. To get the sharpest image, turn the dial to the right.

It will make a smaller aperture. If the aperture is small, the depth of field will large or deep. Such is perfect when shooting landscape photos.

Portrait photos do not need to be so sharp. So you need a larger aperture, which makes a thin and shallow depth of field.

Aperture and F-stop

We keep mentioning depth of field and F-stop. How do these relate to the aperture? A large aperture means that you have low F-stop counts.

You can blur out the foreground and background to keep an image sharp. As you get familiar with F-stop, you will understand the meaning of the numbers.

If you want to separate your subject from distracters on the scene, use a large aperture.

A small aperture translates to high F-stop counts like F/16 to F/22. So, you have a deep depth of field and can produce a sharper image.

If you want to capture a whole group of people or an entire landscape, choose a smaller aperture.

Aperture: what is it and how does it work?

A camera aperture is a physical hole in the camera lens. An aperture opens and closes to allow the light to enter the lens.

If you do not want your Canon Automatic Mode, you can switch to the Manual Mode via the steps above.

When changing the aperture, you are varying the size of the hole. If you make it larger, more light will enter into the lens.

A small aperture hole allows less light to enter the lens. You can switch between large and small apertures.

However, it depends on your photo-shooting needs. How do we measure the aperture size?

We use F-stops, which are usually in a number form. If you have a high F-stop count, the aperture is small. Conversely, a small F-stop count means the aperture is big.

Most novices need time to learn how the F-stop and aperture work because it is confusing.

Apart from allowing light into the lens, an aperture controls the depth of field. We defined depth of field earlier.

Objects your eye finds to be in focus could be out of focus in the camera. After exploring the aperture to learn how it works, you can take excellent photos.

Canon Camera Aperture Problems

A Canon’s aperture problems include the following:

Producing photos with dark corners

Have you ever shot a picture with dark corners? In the photography world, the problem is called vignetting.

When you use wide-angle lenses with a large aperture, vignetting can occur. In simple words, your camera lens captures its ends in a picture, causing it to have dark corners.

Tiny apertures produce black images

If your camera produces insufficient exposure when using smaller apertures, it can shoot black images.

So, your camera allows extra light to pass through the shutter speed or ISO.

After getting a black photograph, you can think that your Canon has malfunctioned.

Creating White photos when using larger apertures

As well as producing black photos, your camera can generate white ones. Black or white photographs look terrible.

So, what causes white photographs? These occur when a larger aperture allows excessive light to get inside the lens.

If the shutter speed cannot adjust the light quickly, the camera will produce white images.

Additionally, if the camera cannot change to a very low ISO, you can get white photos.

Diffraction when using the smallest apertures

Diffraction refers to where the hard edges of an aperture bend the light reaching the lens. The bending of light can occur at a big or small aperture setting.

But, it worsens when using small apertures. As a result, you can get a blurry appearance on images. They will be lower-contrast images with a softer appearance.

Solutions For The Aperture Problems

Dark corners

It is easy to correct this problem because there are two things you can do.

First, discover the biggest possible aperture you can utilize without creating dark corners in photos.

Secondly, you should stop using the largest apertures. It should be a trial and error session where you slowly diminish the aperture until vignetting vanishes.

While vignetting may seem bad, it is not when you want to add some creativity and humor to your photos.

Black images

You can stop producing a black image when using small apertures in the following manner.

First, raise the ISO manually or use the Auto ISO to stop taking black shots.

Secondly, move to a place where you can shoot bright photos with a tinier aperture. If this fails, change the aperture dial to a range of F/11 and F/16.

White images

Check if you can get a uniquely low ISO setting. Otherwise, move to a different place with less light.

If none of this works, raise the ISO setting to a relatively smaller aperture of F/5.6.


If you want to avoid diffraction and softer images, do not use the smallest aperture setting. Instead, decrease your aperture only by one-half.


What can I do if I produce overexposed images and an incorrect depth of field?

If you encounter this problem, there is a problem with your Canon aperture. Maybe the aperture is not stopping down during exposure.

A damaged aperture ring, a broken spring, or sticky blades can make the aperture behave this way. If you know how to change the aperture on Canon camera, you will solve this.

So, turn the camera into Manual Mode. After that, switch the aperture setting to the lowest option and slow down the shutter speed.

Turn the camera to face you and shoot some photos. That will help you see if the ring is working or not.

Did you recently leave your camera in a hot area? Has it been a long time since you replaced your blades? Change these components now to avoid this aperture problem.

Where is the numerical value of my camera aperture?

You are referring to F-stop. It is the unit for measuring the aperture size. If you have low F-stop values, including F/2, F/3.5, F/5.6, F/8, or F11, it means your aperture is large.

In contrast, high F-stop values signify a smaller F-stop. These will appear on the LCD screen of your device. How F-stop works is the opposite of how one expects.

What aperture setting do you need to produce darker photos?

A photographer needs a large aperture setting to produce darker but sharper images. But they should avoid large aperture settings as it can sometimes lead to black images.

What are the functions of an aperture?

If you are entering the field of photography, you will use the camera aperture every day. Among its prime uses is allowing light to enter the camera lens.

It works the same way an eye does. Before reaching the lens, the light should enter through the pupil. So, the aperture works in the same manner.

Also, an aperture controls the depth of field at the photo shooting scene.

What is Aperture Priority and why is it important in photography?

As a novice or a professional, always practice the use of your Canon aperture. Switch it from an automatic mode to the Aperture Priority (Av) mode to experiment with various F-stops.

It is even easier to set the aperture size in the Av mode. As a result, the camera will automatically pick the correct shutter speed.

What are the most important things about the Exposure Triangle?

First is the aperture, and we have described its benefits and work throughout this article. What you need to recall is this.

When you open the aperture widely, it will let in more light. If you open the hole slightly, it will allow less light to get inside the lens.

After the aperture, the other two most important elements of an Exposure Triangle are ISO setting and Shutter Speed.

In the problem section above, you saw the two coming up often. If you adjust any of the two, you can eliminate most aperture problems.


We have been discussing the Canon aperture topic. First, we taught you how to change the aperture on Canon camera.

If you follow all our steps depending on your Canon model, you will control how it works.

Sometimes you want to control the camera, and the only way is to switch off the Automatic Mode to the Manual Mode.

As you have learned, an aperture is a vital feature of your camera. When it opens, the light travels to the lens so you can shoot a photo.

Also, an aperture controls the Depth of Field feature. An aperture can malfunction when shooting pictures.

One can solve these errors without repairing or replacing camera lens components. We have problems and solutions sections in this guide.

Read them to understand some of the issues your Canon aperture can have. Lastly, our FAQs may answer some of the questions you might have.

Leave a Comment