Terry and T. The reason that the negs are so dense, assuming that some stray darkroom light struck it, is that the film does indeed pipe the light through and exposes all the film. That is why with perfectly good 4x5 film holders a neg of Bodie is so dense including the edges, that I can't see a thing. Not even backed by a 150 watt bulb. Thanks Terry. james(posted 8823 days ago)