So that means "if the artwork is public domain, a faithful reproduction/photo of it is also public domain". But if the original artwork is not PD it's not cover

So that means "if the artwork is public domain, a faithful reproduction/photo of it is also public domain". But if the original artwork is not PD it's not covered by that statement. I can imagine a situation where an artwork is copyrighted but someone takes a photo of it and uploads it to Wikimedia saying 'here, use my photo'.. but they don't have rights over the original. Which would be like camming a film in the cinema and saying 'the original is copyrighted but my reproduction is PD'. Not trying to knock the idea - I'm an artist myself and think anything that helps spread and communicate art is great - good on you. Just something to keep an eye on.