Hi, I Would love to get your advice on the minimal lighting setup required for taking a group photo of over 50 people. A beautiful charity group in my hometown are going to use this photo for their advertisements, and when I heard they're going to shoot it using their mobile phone - I volunteered to help, though I'm not a professional photographer. Some more details: It's going to be an outdoor shot, at noon of all times. The weather is going to be partly cloudy. There are some shady areas around the location, in case the sun comes out. We expect around 50-100 people to show up. My gear: Nikon D5200 One YN568ex flash Reflectors and umbrellas (shoot through / reflective) Is there any way I can use my one flash to fill-in the lights for a photo of a group at this scale?Any relevant lighting tips you can share? Thanks!