The daguerreotype was problematic in that it required exposure times as long as 30 minutes to create a portrait.
In addition, the calotype produced a less clear image than the daguerreotype.
Two very important daguerreotypes (an early photographic process) were purchased in the 1990s.
With a daguerreotype, any writing will appear back to front.
In 1842, however, he began working with the newly invented daguerreotype.
Daguerreotypes were mounted in cases under glass with a cover, or in a frame that could be hung on a wall.
He substituted daguerreotypes for judging, a practice quickly adopted by newspapers.
By the late 1850s, the ambrotype was overtaking the daguerreotype in popularity.
