Water Droplets with Particle Effects in Blender

Software: Blender 2.7.2b
OS: OSX 10.10.2
Project Source: https://youtu.be/RDte-IzvHlg

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Water Drops with Blender 3D

I found this tutorial on youtube to create the effect of water on glass as though you were looking through a window.

In this case I tried making it look mildly like the water had gotten on the camera lens.

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Original Photo

The tutorial was created by Sardi Pax on youtube

I've put the video below