I'm doing a shoot in a couple of weeks where there will be a lighting change during a timelapse shot. Camera will dolly around the subject and the shot will be sped up in post to create the timelapse.
So for the lighting the director wants to start out with a sunny look, then go to overcast (not too dark though), then to overcast with rain (again not too dark, more like a spring shower), the finish back at sunny. Now I have a pretty good idea of how to do it with an unlimited budget but that's not the situation. I have about $3500 total for G&E and we are shooting on a stage with green screen so some of that will be going to the spacelights on the stage.
Additional info: We will be shooting somewhere between 5.6 and 8. We have access to a DMX board to control the transition. First thought was HMI for the sun and Skypanels overhead for the overcast bit. Then have a book light on the ground to fill in the shadows a bit and a leko to edge the rain. Of course the HMI won't be dimmable but I was thinking we could block it with a 4x4 of black and then uncover it again at the end. The rental house here is pretty limited and their tungsten lights are all pretty small.
Love to hear other ideas for this. I'm sure there's something simpler that I haven't thought of.