How to Composite a Bloom Effect in Blender

Step-by-Step Guide

1. 1

   Step 1: Open the compositor.

   Make sure that you have the compositor enabled, as shown on the image
2. 2

   Step 2: Add a 'Filters>Blur' node

   ,, Connect the Blur node to the second yellow input node on the mix node. , This makes it realistic, but will take more time to render. , This will vary based on the mood of the picture.
   
   Keep X and Y the same number. , This will again change based on your preferences.
   
   The 'Fac' changes the mixture proportions of both inputs, like a value in a pump. ,
3. 3

   Step 3: and a 'Color>Mix' node.

4. 4

   Step 4: Connect the Render layer to the first yellow input on the Mix node.

5. 5

   Step 5: Connect the Render layer to the yellow input on the Blur node.

6. 6

   Step 6: Enable 'Bokeh' on the blur node.

7. 7

   Step 7: Change the X and Y values to 10.

8. 8

   Step 8: Change the 'Fac' on the mix node to about 0.2.

9. 9

   Step 9: Preview

10. 10

    Step 10: and play around with it.

Detailed Guide

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