Here's the surfaces of 5um, 3um, and 1um aluminum oxide lapping film.
Followed by a pic of the surface of my DMT1200
Followed by a pic of the surface of my DMT1200
It really looks like the 1200 compares more with the 3micron film than the 5 (can't imagine the 9). Any ideas why that would be, or do you disagree? (1200dmt is supposedly made with 9micron diamond particles.)