In the wake of the court decision in America that remastering a song gave the remastered version a copyright of its own (hail, perpetual copyright!), a German court has decided to do something similar with images. Yes indeed, if a photo of a painting is taken, the photographer has a copyright interest in the image. So basically if you have a website in which you discuss the works of Leonardo Da Vinci, for example, get your wallet out, there's a monopoly rent to pay to the museum or art gallery housing these things. I can understand them needing money to fund their conservation, etc., but this is emphatically not the way to go about it.
Read more: http://arstechnica.co.uk/tech-policy/2016/06/digitising-public-domain-images-creates-a-new-copyright-germany/