jan 1, 1900 - The Reise camera, invented by Emil Wünsche, was portable and foldable it also had manual focusing. many types of this camera was created throughout the next few decades. This allowed for photography to become more portable.
Description:
http://camera-wiki.org/wiki/Emil_W%C3%BCnsche_Reise-CamerasAdded to timeline:
Date:
jan 1, 1900
Now
~ 125 years ago