ChronoRank #29

The answer

1. #1The daguerreotype is announced1839Wikipedia — History of photography
2. #2Kodak's first roll-film box camera1888Wikipedia — History of photography
3. #3Polaroid instant camera goes on sale1948Wikipedia — History of photography
4. #4First digital camera prototype (Kodak)1975Wikipedia — History of photography
5. #5First practical DSLR (Nikon D1)1999Wikipedia — History of photography
6. #6Instagram launches2010Wikipedia — History of photography