This photo: I scanned an actual "tintype" photo. It is a type of photo positive that was printed from a negative onto a tin sheet which had been surfaced with photo emulsion. This one required some Photoshop work to bring out the middle shades and highlights. I am astounded at the quality of the original, though.
The subjects are my great grandfather and great grandmother on my mother's side, Dr. Charles Mahlon Comer and his wife Sarah Jerusha Comer. He was a country doctor, educated at Ohio State. I believe the photo was taken sometime around 1876 to 1880.
