October 27, 2013, 11:59:49 pm
Looks to me like it's not a fade-in for the SkyDrop, but making use of the Clip Plane whilst the SkyDrop is also animating.
Alternatively, to fade-in with SKyDrop or Show Layer Effect, you could render twice, then blend together in a video editor.
The sectioned view uses the Clipping Plane:- place the Clip Plane in the scene (Lumion Library Objects --> Lights and Special Objects --> Utilities, then animate using the Move Effect or Advanced Move Effect.
The forum does have a Wishlist Board, and those have been mentioned in the past. The Board is only available to licensed users. For Guests, just include as part of a post.