Blender 2.74 Depth-of-field is okay at 3D-viewport, but not in Render Blender 2.74 has enabled one to add a depth-of-field effect in the 3D viewport. The problem is, when I hit F12 to render the camera-view, the depth-of-field doesn't show up. Any idea why?
You have to achieve the in-render DOF through the compositor. Run your combined image through the Defocus node as well as your Z pass output. The output will be the image with DOF as it was in the viewport render.