The parameters of the Drop Shadow effect in Photoshop are blend mode, colour, opacity, distance, spread, and size.

In Illustrator, they are colour, opacity, x-offset, y-offset, and blur.

I am struggling to recreate my Photoshop shadow effect in Illustrator. I understand the relationship between distance in Photoshop and x,y-offsets in Illustrator. Blur is what I am stuck at. Is there a metric/formula I can use to copy the shadow attributes from Photoshop to Illustrator?

  • IT depends on the document raster settings and the resolution of your Photoshop document. A..aand, whether or not you use pixels as units in illustrator. – joojaa Jun 1 '17 at 13:16

Thanks for posting a nice question. After repetetive attempts i obsorved that "Illustrator drop shadow blur" is 3 times of "drop shadow size in Photoshop". seems some fun observation.

photoshop dropdow shadow size = 10 Illustrator dropdoshadow Blur = (10/3)3.3 only the slight difference is Illustraor shadow smoothness (vector lines), photoshop shadow(raster).

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  • Is this independent of selected document resolution in either application? – Vincent Jun 1 '17 at 12:33
  • 1
    @Vincent YES it is – joojaa Jun 1 '17 at 13:14
  • Thanks! Is it possible to bring spread in the equation? That would be very helpful. – Hari Jun 2 '17 at 8:16

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