will depend a lot on the size of your image. In the original version of this tutorial, I was using a fairly small photo so I set my Distance value to around 95 pixels. This time, I’m using a much larger image so to achieve the same amount of blurring, I need to set the value much higher (to around 500 pixels). The easiest thing to do is to keep an eye on your image in the document window to judge the results as you drag the slider: