What is the name of the app for depth of field?

[Ryzzlle]

Sorry if I am being vague, but I know there is a feature on the htc one m8 for windows that does that, and in a review for it, the man said there was one for Lumia, but he never mentioned it. What's the name, I need it on my 521

 

[Pacus1x]

Maybe you are looking for Nokia Refocus.

WIth that app you can play with the depth of field of any picture.

 

[Ryzzlle]

That's the app, thanks for the help