Lens Blur Filter in photoshop

Applying the Lens Blur Filter

to apply the Lens Blur filter. Just follow

these steps.

Step1. Choose Filter > Blur > Lens Blur to produce the dialog box .You’ll see the numerous options at the right

side of the dialog box, and a preview image at the left side. If you’re using a relatively

slow computer, you can set the Preview option to Faster, which will cause Photoshop to produce a preview more quickly, instead of More Accurate (which gives you a better idea of how the effect will look).

Step2. In the Depth Map area, choose the  channel, Both, from the drop down list.

Step3. For now, leave the Blur Focal Distance set at 0. This control sets the mid-point of the blur effect.

Step4. Set the Radius slider in the Iris area of the dialog box to a value of 35. As with

a real camera, the nature of the blur effect can depend on the characteristics of the “iris” (like the iris surrounding the pupil of your own eye). After you’ve been using Lens Blur for a while, you can experiment with different shapes and blade curvature using the sliders in the Iris area of the dialog box. For

now, we’ll work only with the Radius slider, which, to oversimplify a bit, controls

the amount of blurring applied.

Step5. You can make brighter pixels blur more strongly, which is what happens in

real life. Slide the Brightness control in the Specular Highlights area to a value

of 55. The Threshold slider adjusts how bright a pixel must be to be affected

by this option. Leave it at 255 for now, but you can play with the slider to see

how it affects the image, if you like.

Step6. Blurring tends to remove the normal “grain” of an image, which is unrealistic.

Set the Noise slider to a value of about 7 to replace some of the grain that

the Lens Blur filter is removing. Choose the Gaussian option to randomize

your noise, and mark the Monochromatic box to ensure that the noise will

add grain only, and not change the colors of your image.

Step7. Click on OK to apply the Lens Blur effect.