Tintypes: What the heck are they and why do I keep talking about them?!

The wet plate collodion process was developed by Frederic Scott Archer and introduced in the 1850s.  It became a very popular photographic process by the end of the decade and virtually replaced the first photographic process, Daguerrotypes.  It remained popular until the 1880’s, when it was replaced by the gelatin dry plate process, which was a more convenient process, due …