Looking for some insight/suggestions/tutorials on how to get some decent people shots on a gray cloudy day. I'm supposed to be shooting some head shots/portraits tomorrow for a friend of mine and her colleagues. They are realtors and want updated photos for their website and social media. Our original plan was to use the open shade down at one of the parks and then move across to the school and use the exterior of the building (which is covered by an overhang so more open shade). Was going to use reflectors for fill light. I've shot there before on sunny days and it's perfect. However, weather tomorrow is going to be cloudy and cool with maybe some showers floating around right at our appointed time (3pm). Not the nice overcast giant softbox sky or bright open shade I was hoping for. We'd like to get this in tomorrow as it was a chore to coordinate everyone's busy schedules. They don't want glamour shots but it is all women so will want the photos to have flattering light. Mostly single portraits but will need at one or two group shots (up to 4 people in the group). Should I still try to use the natural light and reflectors to add fill? Will a reflector do any good if there is no directional light to reflect? Brighten them up in post if needed? Or do I trash that plan and use flash for fill? For fill light, I have - 2 ocf flash units with stands and decent modifiers, a trigger, a couple of largish reflectors and some foam boards. Appreciate any advice or suggestions. Thanks.