A member of our club has a layout called Porthminster, which we will be showing at the Adelaide Model Railway Exhibition in early June. If you search for Porthminster on YouTube there are a few videos of it. Anyway, being an exhibition layout, it needs good lighting & he has just upgraded it with LED tubes which look similar to flouro tubes. I'll try to find out some more details & post them here. If you could give an idea of your budget it would be easier to give advice on cameras. Having said that, modern phones can do a pretty good job especially if you use an app that gives you more control over the settings.