1.It used to be only one version and it is a context. That context was divided by a location like a church. Now it is possible to find many replications. The context can be shaped by anything surrounding any of the replications. Art books can focus on specific parts of the painting and do not show the whole thing. Before any replication could be made there was only one way to see a painting now there is a different meaning for every painting for everyone who sees it.
2.Unless you see a painting in person you will not be able to feel the true awe. A screen has flickering lights. It means that you will not be able to see the stillness that you would in person. A camera can move in or zoom around and they can even play music if you are watching on the TV. Even in a book you need to flip the page.
3.Replications can be seen in magazines, advertisements, newspapers or/and on the TV. We have to make sense of all of them in this context. In a way paintings have always been information, but in our modern world we have to understand everything in its specific context.