Here is a super simple tutorial, for a two part sphere where you can put an object inside. I have another one like it that uses animation inside the sphere. I will post it when I see where I put it.
Greg

This is the image and here is the tutorial.

Here is the link for the animated one I mentioned.

Warning! It is a big tutorial, is a little more complex and a lot of fun!!

viewtopic.php?f=10&t=430

What a wonderful effect, so easy and well explained, thank you PhotoMaster (6yrs on)

Glad you like it!