What was the exposure time in around the 1850s?

Question

Than how long were the exposure times when the lighting condition was good?

Answer 1

Well, it varied - from 30 seconds to 15 minutes or longer.
See the links below.

Answer 2

The 1850's marked sort of a cusp or shall I say transition period in early photography from the first practical photographic process called the Daguerreotype process, and the newer glass collodion process which began to emerge in the early 1850's. Each process is uniquely different and exposure times really varied. Initially Daguerreotype portaits would take several minutes. However, the Pezval lens, the first mathematically designed lens, made portraits much faster and less painful to the sitter.
This lens of course was adapted for later use in cameras designed for the newer Collodion process, but again with collodion you could be sitting for a minute to have your portrait taken, hence the reason for these medival looking neck and back braces that supported the sitter and prevented movement.
Though making a collodion or daguerreotype processes requires using specific chemical formulas and processes, there were variations amongst each photographer, and a good photographer could more or less make a photo at best under a minute. So in regards to what were the times, the answer is this, it depends, but lets just say that for portraits a minute or more was not uncommon. If you want to learn more go to alternativephotography.com

Answer 3

Depends on the lighting conditions.