• in portrait photography of the 1860s, exposure times took:
Portrait photography in the 1860s took about 10 to 20 minutes. These are, as noted, portraits, movements and moving objects that could not be captured. Daguerreotypes took 60 to 90 seconds to capture the image.
Incidentally, these first photographic processes were called daguerotypes in honor of the inventor Louis-Jacques-Mandé Daguerre, who introduced his form of photography in 1839. In 1860, other types of processes were also invented and have become more common.
the answer is seconds