I have decided to try plein aire painting. Below is a study of a small bridge that I completed onsite in 3 hours. I realize that working onsite means working faster than in the studio, and I wanted the spontaneity and sense of light that comes from this approach.

Though sometimes you can go so far outside: tiredness or slow drying paint etc, so taking a photo and completing at home can be a good option – better than a ruined painting
I agree! The light does keep changing