• You're welcome 👍

    The film being 15 years out of date (and probably not stored in the freezer in the meantime) definitely is a factor as well, bit hard to say but maybe they did indeed use the right chemicals (it's mostly a bit "dull" colours and severe colour shifts (typical for very old / badly stored film) from what I can see, but not the super high contrast one usually gets from developing slide film in C-41).

  • E6 film through C41 gives a yellow/green/blue bias with added contrast look. It’s the wrong chemicals but used to be done for the unique look it gave before photoshop was around.
    Because you are getting machine prints this bias will be filtered out or at least to as close to ‘normal’ colours, no way are snappy snaps going to know this look might be desired, they probably didn’t know the film was transparencies not negative.
    Film is definitely past its best and unlikely to be chemistry as that’s monitored with test film strips. (Or was when I used to dev and print)

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