I am currently trying to save the depth using a technique under the following: Getting the depth of every pixel to the center of projection of the camera in Blender (effectively storing the mist pass in blender) inside an OpenEXR file. However, I intend to have only one single channel for the same containing just the mist data inside of it.
for this, I have tried to do the following setup under the compositor window:
As can be seen through the properties of the node, I cannot see a way of creating an Open EXR file with just a single channel. I tried opening the file in python using OpenCV and getting a three-channel output.
Is this possible in blender? Can someone guide me with this?