The advances and limitations of early photography.

Photographers after Niepce experimented with a variety of techniques. Louis Daguerre invented a new process he dubbed a daguerrotype in 1839, which significantly reduced exposure time and created a lasting result, but only produced a single image. At the same time, Englishman William Henry Fox Talbot was experimenting with his what would eventually become his calotype method, patented in February 1841. Talbot’s innovations included the creation of a paper negative, and new technology that involved the transformation of the negative to a positive image, allowing for more that one copy of the picture. The remarkable detail of Talbot’s method can be see in his famous photograph, The Open Door(1844) which captures the view through a medieval-looking entrance. The texture of the rough stones surrounding the door, the vines growing up the walls and the rustic broom that leans in the doorway demonstrate the minute details captured by Talbot’s photographic improvements.

The collodion method was introduced in 1851. This process involved fixing a substance known as gun cotton onto a glass plate, allowing for an even shorter exposure time (3-5 minutes), as well as a clearer image.The big disadvantage of the collodion process was that it needed to be exposed and developed while the chemical coating was still wet, meaning that photographers had to carry portable darkrooms to develop images immediately after exposure. Both the difficulties of the method and uncertain but growing status of photography were lampooned by Honore Daumier in his Nadar Elevating Photography to the Height of Art (1862). Nadar, one of the most prominent photographers in Paris at the time, was known for capturing the first aerial photographs from the basket of a hot air balloon. Obviously, the difficulties in developing a glass negative under these circumstances must have been considerable.

Further advances in technology continued to make photography less labor intensive. By 1867 a dry glass plate was invented, reducing the inconvenience of the wet collodion method.

(a) i got it right on the test

the style of music that was composed during the classical era was concerto grosso.