Hi all thanks for all the help. Loosely evaluating the negatives against light with slight magnification, they are mostly pale, except for the properly exposed ones which have much contrast in the negatives. Is that a sign of underexposure, resulting in the poor scanned images as the scanner tries to make out something out of nothing? And could this underexposure be due to my shots being metered too much for the sky hence leaving the subjects underexposed? I was expecting underexposure to yield dark images with a lack of highlights, and not pale images with a lack of any contrast, could someone explain this to me?

Greatly appreciated.