Passage Two

In 1826, a Frenchman named Niepce needed pictures for his business. So he invented a very camera. He put it in a window of his house and took a picture of his garden. That was the first photo. The next important date in the history of photography (摄影术) was in 1837. That year, Daguere, another Frenchman, took a picture of his reading room. He used a new kind of camera in a different way. In his picture you could see everything very clearly, even the smallest thing. This kind of photo was called a Daguerreotype. In about 1840, photography was developed. Then photographers could take pictures of people and moving things. That was not . The photographers had to carry a lot of film and other machines. But this did not stop them, for example, some in the United States worked so hard. Mathew Brady was a famous American photographer. He took many pictures of great people. The pictures were unusual’ because they were very lifelike. Photographs also became one kind of art by the end of the 19th century. Some photos were not just copies of the real world. They showed feelings like other kinds of art.

This passage tells us（）.