How to Draw a Blurred Effect

Have you ever wondered what makes cinematic framing so natural, or why some photographs have such a strong visual impact?

In reality, an image does not need to be completely sharp. Even our vision, although it has very high resolution, encounters blur effects in many situations.

Welcome to this article in which we will discuss the blur effect in drawing, which enables both realistic and dynamic results in your drawings.

The different types of blur effects

Before we begin, I think it’s important to introduce you to the different types of blur effects used in the audiovisual industry, as well as the uses you can make of them. This way, it will be easier to decide which one to use from the conceptualization of your idea.

Let's observe the following image to understand how different types of blur effects are applied. Pay attention to the feeling each one produces.

Gaussian blur

This is an overall blur, which makes the entire affected area uniformly blurry. It is widely used to blur backgrounds to highlight the main elements, reduce image noise, and create light effects.

In the first example, we can see that the background of our image is completely blurred. However, the lights stand out with more intensity, creating a contrast that makes the protagonist appear clearer.

Motion blur

This is an effect used to give a sensation of movement, by distorting and blurring the object that is moving or the environment in which it operates. To apply it, we have two options. In the first, we create a directional distortion that stretches to mimic the object's trajectory. In the second case, with a radial effect, all the distortion originates from a central point and projects in all directions.

In the second example, we see motion distortion that slightly affects our model and horizontally distorts the lights as well as other elements. This gives the impression that our protagonist is moving through space.

Depth of field blur

Depth of field blur is most commonly used in photography. It enables objects in the main plane to be in focus, while rendering other elements blurry. This effectively separates the planes, but also focuses attention on specific details, while giving the image a natural feeling. It is an ideal effect for dynamic landscapes and, of course, for impactful portraits.

In the last example, we notice something similar to the first. However, the most visible difference is that, in this case, the depth of field blur is applied to the furthest elements. This enables us to preserve definition in the closest planes, separate the planes, and apply a stronger intensity of the effect as we move away from our protagonist.

How to represent a blur effect when drawing

Let's now look at how to integrate these effects into our own works. For this, we need to consider both digital formats and traditional techniques. Here are the two possibilities:

Apply a digital blur effect

Various applications like Adobe Photoshop, or similar software, incorporate these options. You just need to look in the effects menu, usually located in the top bar. There you will find blur options. Once the option is selected, a panel will open allowing you to adjust the intensity of the effect. As soon as you click OK, the effect will be applied.

Usually, there is a small box called Preview, which you must activate to be able to see the result of the effect while you make your adjustments.

Apply a traditional blur effect

To start with, I recommend using materials such as graphite or other dry techniques, which can be easily blended using a blending stump or rag. To do this, create gentle, short, and controlled strokes on the areas where you want to apply the effect.

That being said, this approach is not entirely exclusive, as it can also be applied with paints like oil. On the other hand, this can prove quite complex with quick-drying wet techniques, such as acrylic.

Draw a blur effect with graphite pencil 

Start with a simple sketch, such as a still life with two objects placed at different distances from our imaginary lens. This way, we can apply a blur effect linked to the depth of field.

Then apply shadows on your object using a light source. I recommend using a real reference so you can draw realistic and well-placed shadows.

Before adding details or texture, define which object you want to blur, then use the smudging tool to soften the sharp edges and blur the element consistently.

You can now add cracks, texture, reflections, and other details that are only visible on a well-focused object. You can also increase the intensity of the shadows to define it even further.

And so we arrive at the end of this article. I hope it has been helpful and clear enough for you to have all the necessary resources to apply these effects in your own drawings.