I was going to do that as Olympus has a live view mode that shows the picture as it develops….however, with about 5 mins to go before the fireworks started, and not having read the manual on that particular mode, I figured I’d just wing the settings after shooting a few test shots without fireworks to see what exposure was like. I did one at 30 seconds but it looks like phosphorus bombs going off in a battle. 2ish gave me decent sharpness, 4 wasn’t too bad. More than that started to get a bit busy and a bit messy.