How Does Aperture Effect Depth of Field

How Does Aperture Effect Depth of Field – Everything You Need to Know

For anyone who is into photography, it is safe to say that you have seen situations where the aperture ends up effecting the depth of field in the picture. I do understand that it might confuse some people at first but honestly, it is a lot easier to understand.

That is why, if you have been wondering how to get the proper understanding for this, then this post is for you as we explain all the ways depth of field can be impacted by the aperture. You would be happy to know that it is not complicated at all and in most cases, you would be able to get going without wasting time.

So, let’s get to the point and start understanding this.

How Does Aperture Effect Depth of Field

What is Aperture in a Camera?

Before we start talking about how depth of field gets affected by the aperture, we will need to understand what aperture is, in the first place.

The answer to this is rather simple, aperture refers to the adjustable lens opening that controls the amount of light that enters the camera and into the sensor. So, a wider aperture means that the opening will also be wider, allowing more light and a narrower aperture would mean that the opening is going to be narrower, allowing less light in.

Captured Aperture effect cat

What is Depth of Field in Photography?

Next up, we have depth of field and as you may have guessed it, it is really an important thing that you should be understanding. Do not worry as I am going to tell you just how you can understand what depth of field is.

In photography, depth of field refers to how much of the image is in focus. Getting more technical, depth of field refers to the distance in an image where the objects appear “acceptably in focus” or have a level of “acceptable sharpness.”

Canon aperture effect

Now that we are done explaining to you about depth of field in detail, the next thing that we are going to look into is how aperture effects depth of field.

What Factors Affect Depth of Field?

Since everything is said and done, all that is left is to explain the factors that affect depth of field. I do understand that there might be some confusion surrounding it, but do not worry as we are going to make matters easy for you so you do not have to spend a lot of time trying to figure things out.

Understanding depth of field and aperture is among the easiest things that you can go ahead and do. But still, if you are looking to gather more information, we are here to help.

1- Aperture

The first thing that affects the depth of field is the aperture. As I have mentioned before, the aperture refers to the lens opening that you find. The opening is there to control the amount of light that is coming through the lens. The wider the aperture, the less depth of field you will capture, and only the objects close to the lens will be sharp. The narrower the aperture, the deeper the depth of field, and more objects and details will be in focus.

2- Focal Length

Another thing that affects the depth of field is focal length. Now, for those wondering, focal length of the lens determines the image magnification. Which means that the wider the lens, the shorter the focal length. This will allow you to capture depth of field that is wider. The longer, or more zoomed in the camera lens, the less depth of field you will capture. This might be a bit difficult to understand but you can always go ahead and use your zoom lens to correctly determine this.

3- Distance to Subject

The last thing that always ends up affecting depth of field is the distance to subject. This refers to the length between the camera and the focus of the image. The closer the camera is to the subject it is focusing on, the narrower the depth of field will be. Inversely, the farther away the subject is from the camera, the wider the depth of field is going to be. It is not at all difficult to understand.

aperture effect lens photography

If you are looking to get some more information, this is perhaps the easiest way you can make sense of the relationship between aperture and depth of field as well as all the other factors.

Frequently Asked Questions

Aperture affects depth of field in such a way that the narrower the aperture, the deeper the depth of field, and the wider the aperture, the shallower the depth of field.

The f stop or an aperture has a direct relationship with depth of field. Therefore, it is better to have an understanding about this.

The four things that affect depth of field are sensor size, aperture, distance to subject, and focal length.


If you have been having a hard time understanding the aperture, depth of field, and how things influence each other, then this post is for you as we try to make it easier for everyone who is trying to figure out what each term does. Trust me, it is a lot easier when you do pay attention and when you figure out what needs to be done. Rest assured, you will not have any hardships in understanding the complexities.

The importance of depth of field or aperture is not something that one would overlook but I completely understand when people have a hard time understanding these terms.

Gary Sindell

Gary Sindell

Hey, I’m Gary Sindell from beautiful Vancouver. A passionate photographer turned ‘Lens Guru’, I’ll help you discover the power of the right lens and elevate your photography game.

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