There are different ways of getting material or ideas for your paintings. How you go about it depends on how much time you have, or maybe the location you are at. If you plan to go out for the day looking for reference material then you can load up on your supplies. I will bring my paint box, sketch pad, and my camera. Some of the best times for interesting light comes at dawn and dusk, the times spent traveling back and forth to work. Theres nothing more frustrating than driving on your way to work and seeing a sunrise with unique lighting and wishing you were there painting it. If I see on the news that it is going to be foggy on the way to work, I will bring my camera and see if I can catch some scenes. It doesn't matter if the picture is not in perfect focus, because I'm only trying to capture a mood.