Toronto. In 1871, photography crept another step closer to simplicity. Using gelatin instead of collodion, Dr Maddox was able to create dry plates that were even faster than wet plate technology and for the first time instantaneous pictures (about1/15th of a second in bright sun) could be captured. In fact dry plates were consistent enough in speed to let amateurs buy plates, capture images, and take the plates home or to others for development, all at their leisure.
A tripod was still needed and now, since the capture of an image and its printing were separated by time, a means to calculate exposure, and a shutter mechanism too. The dry plate process Dr Maddox created quickly went world wide, setting the stage for the next big thing to come from North America.