Peter,
Anitialiasing, at least with Imagemaster, can affect certain types of
morphs much more than others – specifically, when an area is stretched, as
in a distortion morph.
Try the following experiment: Take an image of a face (human) and drop a
40-point ellipse around an eye – then stretch it out (radically, like 3x
the size) in the destination frame. Now morph just the final image (the
result of your animation, this would be).
Do this both with AA on, and off. I think you'll see why having it on is
far better in many cases.
For a source<->source morph, I think you may have a point – the morphed
images only exist for fractions of a second, and that may not be long
enough for most viewers to spot the discrepancies.
FYI, of course. Glad to see you making such intense use of all the
morphing tools. You'll be the resident expert before long! <grin> If I can
help you with that, I will.
–Ben
…via AutoPilot