USCamera Light Seal Placement Guide | Koni-Omega Rapid Film Back | 120 or 220 Roll Film Before doing anything, please read about light seal foam removal and installation. USCamera Light Seal Placement Guide | Koni-Omega Rapid Film Back | 120 or 220 For more information on purchasing this Koni-Omega kit. I am describing the placement of this kit as if you are looking at the film back, film pressure plate side with the rapid advance lever on the lower left. This 5-piece light seal Read More...