Settings and Macros/DepthDefocus Description

From VFXpedia

DepthDefocus_v03-1

Creates physically-correct depth of field effect using an additional image as a depth map.

If you have objects on transparent background to defocus, you need to expand your Z-channel beyond the edges of the objects so it fills all the area covered with the effect.
You can use the Erode/Dilate for this purpose, but there is a special tool BzPixelExtend designed to work in conjunction with the macro.

See an example of joint using these tools: DepthDefocus_Macro_v03_Example_CubesZ_EdgeExtend

• Main Inputs

  Input

  Source image

  Depth Map

  Image indicating distance from the camera. The brighter are pixels the closer they are. Darker pixels are farther from the camera.

• Controls

  Depth Map Channel

  Select a channel to use as the depth map

  Focal Point

  Pick an object that should be in focus or enter numerically the depth for the focal point. The picker should be used on the resulting image

  Blur Size

  Power of defocus

  Depth Power Curvature

  Makes the power of defocus to increase non-linearly with depth like in real-world defocus
  If Depth Power Curvature = 1, defocus size increases linearly with depth.
  If Depth Power Curvature > 1, defocus size increases slower with depth which is physically correct.

  FG Power

  Adjusts the power of defocus for the objects in front of the focal point separately

  Quality

  Quality of the effect

  Image Gamma

  Adjusts the blooming effect. Start from 2.2 for sRGB images

  Show Defocus Power Map

  Displays the amount of the effect map instead of the final output

  Connect Z Buffer to the Output

  Attaches the Z Channel to the output image

Depth_Defocus_Macro_v01-1.mov - a demo movie

Depth_Defocus_Macro_v03_Example_Plane.comp - an example of using the DepthDefocus macro

Download DepthDefocus_v03-1

Development History on PigsFly

Gregory Chalenko
www.compositing.ru