So, I made this outdoor project and I'm trying to blur the grass that peaks in the foreground, but controlling the depth of field and/or focus of the camera doesn't help me at all. Actual render

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  • $\begingroup$ Change the viewport shading type from Material to Rendered to see the results. $\endgroup$
    – Paul Gonet
    Commented Aug 3, 2017 at 11:22
  • $\begingroup$ The upper picture is the rendered image $\endgroup$ Commented Aug 3, 2017 at 12:16
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    $\begingroup$ The Size option is set to 0, which means no bluring afaik if using Radius mode for aperture. Either increase it or change it to F-Stop and decrease (by default 5.6) $\endgroup$
    – Mr Zak
    Commented Aug 3, 2017 at 12:25

1 Answer 1





Focal point:

Use Empty object as a Focus to better control DOF. Just place it where you want to have sharp spot and it's done.

Matching Viewport Preview with Render:

To match both views you need to use F-stop values for both Aperture and Viewport also you need to check High Quality. And lastly turn on Depth Of Field under Shading tab (N to open/close Properties Region).


Check your Focal Length and F-stop Values as they are crucial for DOF. Lower F-stop value will give you shallow DOF (more blur), higher Focal Length will also give you more blur but it will distort perspective.

  • $\begingroup$ It worked, thanks a lot! Had problems with a simple empty, so had to create an empty cube, make the borders coincide with the shape of the building, excluding the grass, played a little with tweaking and obtained what I wanted. Really really helpful! :) $\endgroup$ Commented Aug 3, 2017 at 16:14
  • $\begingroup$ @ChristianTriolo To add Empty press Shift+A > Empty > Plain Axes $\endgroup$
    – cgslav
    Commented Aug 3, 2017 at 17:07
  • $\begingroup$ @Lincoln are you using Cycles renderer and/or have active camera in the scene? $\endgroup$
    – cgslav
    Commented Jun 11, 2019 at 18:19

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