How to Use the Image Blur Filter in Photoshop – Step by Step

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How to Use the Image Blur Filter in Photoshop – Step by Step

You love to work with the application, Adobe Photoshop and give your images a unique and special touch and make them more attractive. Well, in this guide, we will teach you how to use the image blur filter in Photoshop, so that you can stand out with your images. With the help of this guide, you will learn how to use the gallery of blur effects in Photoshop, so pay attention.

Image blur filter function

To give an effect of depth to your image, you can use the blur filter, so a part is in focus and the other areas are out of focus. By using a selection of the area, you will be able to determine which part you want to blur, and you can achieve this with a separate alpha channel depth map.

The image blur filter works with the depth map to map pixels in the image. Therefore, when working with this format, you will be able to use the crosshairs to determine the epicenter of the blur, which you want to make.

To create depth maps, you can use layer masks or alpha channels and work on the design of your image. Where the black areas of the alpha channel are treated as if they were the first printed page of the image. And the white areas of the layer masks will be treated as if they are distant, which will make it easier to blur the image.

Using the Image Blur Filter

Depending on the iris shape you choose, the blur effect will result, just as the number of pages determines the iris shape. You will also be able to modify the pages of the iris, rotating or making it circular, as well as reduce or enlarge the image with the plus or minus options.

image background blur

  • Enable the graphics processor in Photoshop.

  • Choose the “Edit” option in Photoshop.
  • Then select preferences>performance and use graphics processor.

With Photoshop 21.0, Image Blur works in conjunction with your PC’s graphics card to enhance Image Blur filters. And with version 21.1, the image blur algorithms were improved, to achieve more blurred edges in the foreground.

Steps to use the image blur filter

Next, we will explain in detail the steps you must take to correctly use the image blur filter in Photoshop.

  • First, select filter>blur>image blur.
  • Then go to preview and select one of the following alternatives.
  1. More exact: This alternative will allow you to see the final result of the image, although it usually takes a while to render.
  2. Faster: This option allows you to see a quick image preview.
  3. Depth Map: Select a channel from the source menu, either Layer Mask or Transparency.
  4. But if you don’t have a depth map channel, choose “None”.
  • With your cursor, drag the blur focal length slider, to determine the depth of the pixels, example:
  1. You will determine the focal length to be 100 pixels.
  2. So the pixels at 1 and 255 will be completely out of focus.
  3. But pixels that are close to 100 won’t look as out of focus.

image depth blur

  • Then select the preview image.
  • Now the blur focal length slider will reflect where you select the image.
  • And it will show you a depth approach.

Continuity of steps of using image blur

After having taken the simple steps, which we have already mentioned to blur an image using Photoshop, we continue with these:

  • Choose the “Invert” option to change the alpha channel you are using.
  • Select an iris from the shape options.
  • According to your preference you can give curvature or a rounding to the edges of the iris.
  • Drag the Radius slider, to give the image more blur.
  • To give a limit to the brightness, drag the “Specular Highlights Threshold Slider”.
  • And to increase the brightness, drag the brightness slider.
  • From the Noise section, select “Amount Slider”.
  • From noise distribution choose “Gaussian Blur”.
  • To add gray noise, choose “Monochrome”.
  • And, select “Ok”.

Done, we hope you can take advantage of the information and use the image blur filter, with the help of this practical guide.

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