The conversation is mainly about

W: Hi, got any plans for tonight?
M: Hi, not yet. Any suggestions?
W: I just got two tickets to the opening of an exhibit of reprints by Julia Margaret Cameron.
M: An exhibit? I like such things. But I don’t know who Julia...
W: Margaret Cameron! She was a photographer in the 1800s. She is interesting to art historians in general and students of photography in particular because she changes the aesthetics for photography.
M: What do you mean?
W: Well, her specialty was portraits and instead of just making a factual record of details like most photographers did, you know, just capturing what a person looks like in a dispassionate thought of way, she, like a portrait painter, was interested in capturing her subject’s personality.
M: Interesting! How did she do that?
W: She invented a number of techniques that affect the picture. Like one of those things she did was to blur images slightly by using a soft focus on the subject. That’s pretty common now.
M: Yeah, I’ve seen that. Who did she photograph?
W: Famous people of her day, Alfred Lord Tennyson, Henry Wadsworth Longfellow, Charles Darwin... We’ll see at the exhibition.
M: You really pick my curiosity. I am going to enjoy this.