Response to Negative quality

In an old book (dating from the late sixties) I read that to intentionally cause reticulation, you should develop the film in "hot" developer (I think suggested a temperature of over 30 degrees Celsius.) and wash in cold water after developing. There was also a warning that this might happen unintentionally if the temperature mismatch between the baths were too big. The effect is explained as owing to the different thermal expansions of the film base and the gelatin, and I always thought that it is not a very likely thing to occur with today's films which have very thin emulsions. Yet, maybe this is what happened.

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