[pandesmos]

I don't believe so. INAL but if the photograph attempts to exactly replicate an image I'm pretty sure copyright doesn't hold. So like, a high resolution image of a Caravaggio is still usable as public domain.[0]

I'm pretty sure the Vatican's got to "ruin" the images with a watermark or anyone would be able to use them as is for whatever they want. It'd be different if it was sculpture, but these pics seem to me like they'd definitely fall into the "slavish reproduction of a public domain work" category.

[0] http://fairuse.stanford.edu/overview/public-domain/welcome/#...

[dragonwriter]

Er, why are we looking at reference on US copyright law here? The State of Vatican City is not a US jurisdiction, and it has its own copyright law (which incorporates, to the extent that it is not preempted by the special laws promulgated by the Vatican, the copyright law of Italy.)