How to use the PRISM lens to reduce
- Glass end of lens facing out.
- Insert into projector. Have lens almost all the way out.
- Darken room, turn on Prism projector.
- Set at 15 inches from surface. Focus should be clear. 80% reduction at this distance.
- Back away, push lens in, twisting. Further back to enlarge, move lens in. Distance enlarges, lens focuses. This way reduces, or enlarges up to 2 1/4 times.