Early photography required a long exposure time and the developing process was laborious. Handling of silver powder was also risky. However, early photography was such an important feat. Portraits were famous subjects of photography. Pictures of landscapes and everyday life were also common.
Answer:
The most unique feature of “The Ninth” was that Beethoven included chorus and vocal soloists in the final movement. He was the first major composer to do this in a symphony.
In not 100% sure but is it true?