Depth of Field and Bokeh

in Maya and Nuke

2014/02/25

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What is Bokeh?

"the way the lens renders out-of-focus points of light"

“Forrest Gump” (1994)

“Nebraska” (2013)

“The Deer Hunter” (1978)

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What’s the difference?

• Arriflex 235, Panavision C-, E-Series and Super High Speed Lenses 

“The Dark Knight Rises” (2012)

35mm Anamorphic Lens

• IMAX MSM 9802, Hasselblad and Mamiya Lenses 

“The Dark Knight Rises” (2012)

IMAX Lens / 35mm Standard Lens

Bokeh Shape of Anamorphic Lens

Bokeh shape of IMAX Lens

• Anamorphic Format
  
• Diaphragm

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Mental Ray Lens Shader

“mia_lens_bokeh”

Create a lens_bokeh shader

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Parameters of lens_bokeh Shader

Define the Focus Area (Distance from Camera)

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Using Bokeh Shape

“Default” Bokeh Shape in 3D Software

Real Bokeh

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Bokeh Shader (Default)

• Radius 0.1
• Sample 16
• Bias 1.0
• Blade Count 0
• Blade Angle 0

Bokeh Shader

• Radius 0.1
• Sample 16
• Bias 1.8
• Blade Count 9
• Blade Angle 0.2

Render Setting

• Unified Sampling 2.0
• Min 10, Max 100

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Nuke ZDefocus

Parameters of Nuke ZDefocus Node

Focus near the Camera, Default Bokeh

Focus near the Camera, Anamorphic Bokeh

Focus far away from the camera

Artifact

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