jsprogg,

LOL, I think its something thats really overlooked, especially if you arent animating a scene of this size. Im busy with this type of work alot now, its a real time saver and the results can be stunning. Its a pity its not as useful for characters though LOL

If it was animated you could still reproject the painting back over it for a minor camera move, if its a big camera move then you could set up multiple projections with 2 or more mattes being projected from different angles. A lot less hassle than uving this lot.

Cheers
Jay