Last time we took a look at Photoshop’s Iris Blur to draw attention to areas of the image, in this post let’s have a look at the similar, yet different, Field Blur;
In this post I’m using the image Wine File: #84794962 by magdal3na.
Working with Smart Objects really helps when using the Field Blur, most of the time I use this filter I end up going back and tweaking the settings so the first thing I do is convert the layer;
When opening the Field Blur the new window should look familiar, on the right you can see that Iris Blur is there, collapsed, and Field Blur is open. We can skip between the two at any time they don’t work well in conjunction with each other however, so it’s best to run one at a time.
The Blur Pin
Just as with the Iris Blur and when we looked at Path Blur Photoshop has added a blur by default. This pin works just the same as the Field Blur with a radial dial to determine the blur amount. This time, like the Path Blur there’s no outer edge of the blur. Instead, adding more pins will change the blur amont;
Here I’ve added two pins at 40px blur and one in the middle of them at 0 Px. We can see that the blur transitions from one pin to another. The closer the pins the quicker the transition.
Shaping The Blur
By adding more pins I can isolate the areas I want but also control the amount of blur in one place. In this example I’ll try to isolate the cheese while giving the wine, bread and vineyard varied blur and thus depth of field;
This may look complicated and a lot of work but you can click and drag a pin to copy it while using the keyboard modifier keys of;
Option+cmd (Mac) or Alt+Ctrl (PC)
This drastically reduces the amount of clicking!
Tweaking The Blur
For a ‘first pass’ at adding the blur this isn’t too bad, but I can see areas I’d like to tweak. Because I made this a Smart Object I can double click the Smart Filter and add, delete or move pins.
You can add a Iris blur as another Smart Filter should you wish. Filters are applied to the image bottom to top so here;
My Iris blur is applied first before the Field Blur.
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