It reminds me a little of ukiyo-e, where even beautiful and finely detailed images would have basic errors of perspective. (For example, in http://loc.gov/pict

It reminds me a little of ukiyo-e, where even beautiful and finely detailed images would have basic errors of perspective. (For example, in http://loc.gov/pictures/resource/cph.3g08423/ http://loc.gov/pictures/resource/cph.3g08423/ , the way the boat meets the water is baffling. As far as I can tell, this is an error, not a knowing artistic cheat.) I assume that the drafting skill of even low-quality drawing went up quickly as photographs became ubiquitous, but I don’t have the art history background to support the notion.