How to use Bokeh Images in Redshift and Cinema4D

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*What do Bokeh images do?*
Bokeh images are a great way to alter the look of your depth of field.
Standard bokeh with an aspect ratio of 1 is based on the image of a perfect circle. When you adjust the aspect ratio it squeezes that image vertically or horizontally. You can use bokeh images that have different shapes to get a variety of looks. You can also use images with color to create a chromatic aberration effect.
*How to use them.*
Place a camera in you scene and add the redshift camera tag. In the tag, go to the bokeh section and scroll down to “image”. Check the “Use Bokeh Image” option. Locate an image to add. As you can see it’s now affecting the shape of our bokeh and adding a slight tint to the scene.
When you add a bokeh image, the “power, aspect and shutter blades” parameters stop working.
You can alter the “Normalization Mode” to change how the image map tints the scene.
Unit intensity mode tints the image based on the colors in the bokeh image. While “White Color Sum” removes an unwanted tinting from the in-focus pixels.