David Lyga
Member
OK, I have to say this. Only within the past dozen or so years have light seals become so obsessively talked about. I have owned cameras for over half a century and I have rarely worried about them. Fact is, even if worn, cameras are generally light-tight. In fact, the earliest cameras from Japan did NOT have light seals.I don't know. FTn, I guess.
Do those who worry about the sealant deteriorating ever bother to check for light leaks? Simply place about six inches of unexposed film into the camera, securely, from cassette area to take up area, close back, take ONE accurate exposure, then leave the camera's back exposed to the sun for a long time (an hour?). then process that 'vulnerable' film. Chances are great that the film will be clear except for the edge markings and exposed frame. The reason for the exposed frame is to provide a reference point for the precise location of any light leak which could possibly manifest. - David Lyga