I didn't see a spot in "lumia" for scan-thru glass/filters. So far, I have the obligatory diffraction grating, lenticular optics, a nice fresnel that produces great streaks, a 6 and 8 point star burst filter, and a very gentle convex lens (before scanners so, not technically a scan-thru). I am trying to find other materials that work well for scan-thru and was wondering what other people were using in their rigs. I know the Laserium and AVI style rigs have many different filters and would love to see a catalog of what they're using. Hoping DZ chimes in as his dual AVI has some good filters.