Blender Stack Exchange is a question and answer site for people who use Blender to create 3D graphics, animations, or games. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Situation: I am setting up a Vignette effect for my scene. Like what I do normally, I have a lens distortion node, math node (set to 'greater than'), blur node, and a mix node (set to multiply).

Problem: However, for this scene, the vignette effect seem to have a weird shape and it's not symmetrical either. Below is the result. How do I fix this? Thanks. Here is my blend file

enter image description here enter image description here enter image description here

share|improve this question
up vote 4 down vote accepted

Creating a vignette can be done much more simple by creating an ellipse mask node and tweaking the size value and then blurring it and multiply it with your image.

share|improve this answer
How is this simpler than using a method that uses relative dimensions, and thus always has the rigth size? While this works it's not the best option. – someonewithpc Jul 17 '14 at 13:18

That weird shape looks a hell of a lot like a distorted mountain to me. You shouldn't plug your source image into the Lens Distorsion. You could instead take a Distort-->Scale node, in Render Size mode, so that you have a totally white image.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.