In this fourth episode of a nine-part series dedicated to Atmospheric Perspective in Compositing in Blender 4.1, we will implement the first of the effects in this series: distance blur!
Video Transcript
In this fourth episode of a nine-part series dedicated to Atmospheric Perspective in Compositing in Blender 4.1, we will implement the first of the effects in this series: distance blur!
Regarding distance blurring, we can use a Blur node in Gaussian Relative mode at 100%, using the Normalize output as an adjustment factor for the Size input.
Indeed, we want more blur in the distance, so the mask should be whiter where the elements are farther away.
This type of mask is precisely what comes from the Normalize node. With the Relative mode set to 100%, the effect will be maximum only in pixels where the mask, delivered to the Size parameter, is completely white, and gradually less intense for darker pixels.
To narrow down the range of the effect to the farthest elements and, simultaneously, adjust the intensity of the effect, you can add an RGB Curve node between Normalize and the Size input of Blur.
Let's adjust the C curve of the RGB Curves node, particularly by introducing a control point and moving it towards the bottom right corner of the graph, to assess the effects on the original rendering.
You can examine the changes introduced by the RGB Curves node on the Depth mask by connecting the RGB Curves output directly to the Reroute node.
Then, adjust the curve until you achieve a result that satisfies you.
