Hey everyone! I just wanted to follow up on this project. Thank you to everyone for your input! I ended up doing an impromptu shot for 180 people that the company asked for at the last minute right after I arrived at the hotel so they were happy to get whatever I could provide. It was decided to photograph this group right after they came out of thier sales conference meeting at the end of the day in the atrium of the hotel. The outlets were not working we found out so with no time no time to spare I took the escaltor to the fourth floor and everyone gathered into a fixed space right below me. I had a 28-55 on my camera and set the ISO to 3200 at f8 and took several shots focusing about one third of the way into the group. In photoshop I played with the exposure, highlights and shadows, the whites and blacks etc and was able to produce a usable image. The next day for both the group of 50 and the group of 100 I set up my lights as follows.....the 2 photogenic 1250 power lights were placed each on either side toward the front high as they would go and pointed to their opposite sides. Next to each of those lights were my 2 godox 300 lights set to full power to fill in at the back of the group. All four lights were bounced out of large umbrellas. I metered f8 through most of the space except the outskirts remained almost a full stop more and the very center almost a full stop under....over 5.6. Camera settings were ISO 400, F8 at 6.3 at a 60th for the ambient fill. Again, lowering contrast and highlights and playing with brightening and exposure, usable images were produced. Images taken from the third floor. A megaphone came in handy! The first image and last image are finished and the middle two showing the set up and raw image Critiques welcome.