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I want to gradually hide/unhide a group of objects (ctrl-j). For example, I have 2 nested spheres with a radius=1cm and radius 2cm. Both have different materials. Opportunities I have found so far.

  1. Show/hide abruptly with Object Properties/Visibility/Viewports and keyframes. But it only works abruptly. I also tried to change the Bezier transitions in the Graph Editor. But Blender doesn't allow that.

  2. Gradual fade in/out with Material/Alpha keyframes of each individual sphere. It works but is cumbersome. What if the grouped object consists of about 100 individual parts?

Is there perhaps a more elegant way?

Thanks!

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  • $\begingroup$ Can you render with and without the objects, and use any video editor to generate a fade transition? It will save render time, but only works when camera is not moving $\endgroup$
    – Shantanu Aryan
    Commented Sep 27, 2022 at 15:22
  • $\begingroup$ Unfortunately, that's a bit too cumbersome for me. In addition, the camera also moves partially. Thanks anyway. $\endgroup$
    – PowerNow
    Commented Sep 29, 2022 at 15:29

1 Answer 1

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I helped myself with Node Groups. Then you set the keyframe also only on one position.

enter link description here

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