A Beginner’s Guide to Blur Filters and Effects

Are you looking for a quick way to make your photo more dramatic? Adding a blur is a great way to do it. Consider this a quick-and-easy beginner’s guide to using a blur filter and a blur effect.

Whether you want to achieve that shallow depth of field look or add a sense of speed, various blurs can produce different effects. Today, we will give you a quick introduction to the various blur features. By the end of this article, you will be able to tell the difference between a box blur and a shape blur.

What Are Blur Filters?
Blur filters are simply algorithms that make a specific part of your images out of focus.

Blur is a natural part of photography. A good photographer knows how to control different aspects of blur to make a more impactful image. You can do this by setting a narrow aperture, so only the subject is in focus. Or you can reduce shutter speed and pan over something moving by you quickly, like a speeding car.

You don’t have control over your camera just yet. You can create effects after you have taken the photo. There are even options that give you results that not even a camera can produce.

In this article, I’ll go through some blur effects.

Blur Effects:

  1. Gaussian Blur for a Natural Look
    Gaussian blur is most likely the most popular blur filter. It can be used in many ways but is most well known for smoothing out images and surfaces. You can also apply the blur in small doses to places that contain too much noise.

You can artistically use this blur. Or you can blur the background to create depth. People use this blur for almost anything. This could be due to the way it creates a natural blur in a bell-shaped curve. This curve will blur the aspects away from each point in a bell-shaped manner. It makes the blur effect more intense near the epicenter. Then the effect gently progresses outward in a bell shape.

  1. Box Blur for Detailed Edges
    The Box blur filter is quite similar to the Gaussian blur. The main difference between them is indicated in the title. Instead of creating the blur in a gradual curve, the Box blur creates a cubic shape.

The Box blur looks for edges in an image to keep more detail. Two contrasting colors create these edges. So this blur is helpful for situations where you want to soften a surface but enhance its edges.

3. Lens Blur for Depth

The Lens Blur filter mimics a shallow depth of field. You can use this filter to add more depth to the image.

The filter uses a depth map to determine the position of pixels in your image. You can even set this to a depth map that you have created for your photo for more control.

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