I saw somewhere this quote from Wodehouse's Meet Mr. Mulliner (1927):
"Statistics show that the two classes of the community which least often marry are milkmen and fashionable photographers – milkmen because they see women too easily in the morning and fashionable photographers because their days are spent in an atmosphere of feminine loveliness so monotonous that they become surfeited and morose. I know of none of the world's workers whom I pity more sincerely than the fashionable photographer; and yet […] it is the ambition of every youngster who enters the profession some day to become one."
From context, "fashionable photographer" doesn't mean a well-dressed photographer, but probably what we would now call a "fashion photographer". Searching on Google Books found a lot of results for "fashionable photographer". Searching on Google Ngram Viewer showed that "fashionable photographer" used to be more popular until it was decisively overtaken by "fashion photographer" some time in the 1950s:
To focus on 1865–1965:
To modern ears (at least one pair of them), "fashionable photographer" sounds odd: it's not the photographer who is fashionable, after all. My question:
Why did the switch from "fashionable photographer" to "fashion photographer" happen? (Is this a special case of some more general pattern: are there other similar phrases in which "⟨adjective⟩ ⟨noun⟩" changed to "⟨noun adjunct⟩ ⟨noun⟩", say?)
Is there also a change in the meaning? Does "fashionable photographer" mean something different from what "fashionable photographer" does? (I guess the steep rise after 1960 in the above graph corresponds to a rise of the fashion industry, but I don't know anything about the history of the fashion industry… perhaps a "fashionable photographer" was something else.)