A、Backlighting. B、Flashbulbs. C、Time-lapse photography. D、Soft focus. DAccording to the conversation, what unique photographic t

W: Hey Steve, got any plans for tonight?
M: Hi, Jane. No, I don’t think so. Why? Got any suggestions?
W: In fact, I do. I just got two tickets to the opening of the exhibit of the reprints by Julia Margaret Cameron. I would have to mention it earlier, but I was on the waiting list for these tickets and I wasn’t sure I’d even get them.
M: An exhibit, huh? 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 ... how should I say, change 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 look like in a dispassionate（平心静气的）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 these things she did was blur images slightly by using a soft focus on the subject. That’s pretty common now.
M: Yeah, seen that. Who did she photograph?
W: Famous people of her day, Alfred Lord Tennyson, Henry Wadsworth Longfellow, Charles Darwin, I don’t know who else. We’ll see at the exhibition.
M: You really pick my curiosity. I am going to enjoy this.