For onion skin, I have tried "glass" ink and "merge" ink and agree that 24-bit
color is needed in Animator.
I have also tried "trails" and didn;t find it very useful. It could be improved
if it would support overlaying a user-specified number of frames.
I've never bothered comparing the results of using "merge" and of using
"glass".
Do they differ?
I must confess I have never used merge ink. I used trails once and found that
neither of the options gave me anything I wanted. One slapped totally opaque
copies of the moving item on top of each other, retaining every copy thru
succeeding frames and the other made such faint copies that after 2 they were
invisible. Now this *was* in Animator, not A Pro, so maybe that is improved in
the better package. One of these days I have to go in and try everything in AAP
so I really know everything that's new and different. By the time I got AAP, I
had Studio, so my time has been in there, mostly.
DT