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 Aug 3 '17 at 11:22
  • $\begingroup$ The upper picture is the rendered image $\endgroup$ – Christian Triolo Aug 3 '17 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 Aug 3 '17 at 12:25




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! :) $\endgroup$ – Christian Triolo Aug 3 '17 at 16:14
  • $\begingroup$ @ChristianTriolo To add Empty press Shift+A > Empty > Plain Axes $\endgroup$ – cgslav Aug 3 '17 at 17:07
  • $\begingroup$ @Lincoln are you using Cycles renderer and/or have active camera in the scene? $\endgroup$ – cgslav Jun 11 '19 at 18:19

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