USCamera Light Seal Placement Guide | Mamiya Super 23 Film Back For help installing light seal kits please go here.  Following the link to that short read can improve the quality of your light seal installation. USCamera Light Seal Placement Guide | Mamiya Press/Super 23 Film Back For more information on purchasing this kit, go here     You are installing a 6 piece kit for the Mamiya Press/Super 23 film back or roll film holder as Mamiya called them. This USCamera custom light seal kit Read More...