For photographic lenses I d say go ahead and write an article at photographic lens and we ll just add links from lens and lens disambiguation I m assuming that you ll want to write photographic lens from a more practical point of view and keep lens mostly as a theory of optics type article Alternately we could just make lens a disambiguation page and move the articles to lens optics and lens photography I don t have a strong preference although the first option is easier As for rainbow I can t see anything wrong with the picture what makes you think it is a fake It seems it was added by user Karen Johnson BTW 20 43 Jan 23 2003 UTC