<p>It depends on the congregation. If the average age of people in your congregation is say 25, you probably try and then continue to use video backgrounds. If the average age of people in your congregation is 50, then you probably get complaints by the older folks that they can't read it, so you go back to still pictures. If your average age is 75, then you need to be very careful about selecting photos, or you move to a plain colour background, with contrasting colour. There are exceptions, I find careful selection of photos that are either dark or light, then using a contrasting colour in a rather large font (we are using 65-70pt) and it's working, I think there are about 3 people not using it now, one sits at the back, because they have sat in the same spot since 1930, even though they would have no trouble seeing it, if they sat about 5 rows up. </p><p>Other factors are the amount of realestate you can commit to a screen, and the amount of ambiant light. Let me explain, if you have a <15m(50') front to back sanctuary, a standard portable screen should be visible from the back. If you have a sanctuary that is 45m front to back, it's going to take a screen 4 times the size to be visible from the back, that's a huge screen that should be permanently mounted and motorized. Ambient light is another issue, our sanctuary was built in 1900, the windows are huge, because when it was built, you needed oil lamps for lighting and they were very expensive to operate, so they used huge windows to get as much light as possible inside, so you didn't need the lamps. The front is oriented to the North. This means that when the sun is shining you need a lot of projector horse power to make it visible, when it's cloudy it's wonderful. We are actually moving the projector to get it closer to the screen, to try and burn through the sunlight and give a better picture on sunny days and solve a key stoning problem. </p><p> </p><p> </p><p> </p>