Hello everybody,
Could you tell me how to affect the opacity of a group of objects.
I would like to play with transparency on an entire collection.
Is there a way (without going to the compositor)?
Welcome 
…
usually transparency is changed in a material (shader) setting… so this would be different ones for different objects… so no one settings for a whole group…
…but maybe by using some drivers/ simple expressions to sync this…
You can put a mix shader in a group with transparency. Add your shader as input in this group. Then your mix factor inside the group ll be shared by all mat using this node group.
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