The app is simple and straight forward. The app will take multiple pictures with different focus levels to show you a perfect all focused picture.
from the app bar you can then choose to focus a particular object or the entire scene.
the app also has a color pop feature, which will allow you to select a particular color in the picture while the rest of the picture is in black and white.
Here is a picture taken from this app on Lumia 820.
I will show a step by step guide for this app in the next post. Meanwhile check out “Nokia Refocus” for Windows Phone http://www.windowsphone.com/s?appid=0b5cc26d-a723-4c69-8be3-66bbd9b2bed1
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