I am animating a camera, and strangely, I see inbetweening images between the two key poses (the inbewteens are what you see in brown on the picture below).
I might have unwillingly activated some kind of an onion skin or something…
I don’t know if I activated some stereo option. I did not even know there was one in Blender. I also don’t know about dupliframes… That software is definitely very handy! Too bad it is so difficult to learn…