Reading over the posts in this thread again, because I've nothing better to do, made me think of a couple of things, which I hope I remember long enough to make this post.
Regarding photography, digital and otherwise, some early photographs were very high resolution, though in black & white. I imagine that the large negative and the long exposure for studio portraits had something to do with it. I worked in photofinishing labs for about twenty years. The salesman for one of our vendors had a collection of glass plates and our plant manager made a print, maybe 15" by 20" or thereabouts (this was over 20 years ago) and the resolution and detail was astonishing. It was a post-war photo of Lee. Although that print was remarkable, I couldn't say if it was typical or not, mainly because I haven't seen another photo that size and one shouldn't judge the original by looking at a photo in a book. That's even more true of paintings. There was an exhibit of photos taken by Victoria and Albert somewhere several years ago but the photos on display were mostly of snapshot size, quite small. Don't remember where I saw them, either, maybe in the Victoria and Albert Museum in London.
Now, regarding "naked nudity," sometimes it feels like I am more than naked when I am nude except for something on my feet and the bigger the shoes, the more naked I feel. In other words, wearing boots makes me feel more naked than just a pair of sneakers. Totally ridiculous, I know, and it's all in the mind. There is no legal distinction of course, and the legal distinctions turn on the word "exposure," as well as what is being exposed. I suppose that in a sense, that's all in the mind, too, at least of those who write the laws.