The light source can definitely affect the color of your images. I assume you used daylight balanced film with different types of artificial light. Generally, with fluorescent bulbs: cool white tend to give a green cast, warm white a pink to orange cast and daylight (bulbs) a blue cast. That along with the other factors you mention, there are too many variables to single out one. It's best to standardize your technique as much as possible so when something is not to your liking it's easier to make a correction.

I would start with a light meter and a roll of a film known to give good results. Shoot in daylight and have it processed where some pride is taken in their work. Another thought is to take a roll of transparency film which is not very forgiving. That would be a check on your metering technique. Once you have a properly exposed and processed roll, you can determine if the scanning and/or printing is up to speed.

Hobbyist or pro or somewhere in between if you are going to take the time and effort to make photographs you want decent results.

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