Once upon a time when digital cameras were not yet invented there was a thing called film. After clicking the shutter button to take pictures, you bring the film to a photo shop to have it developed. You will be asked to choose the type of paper for your photos and usually you will be given two options matte or glossy. Things were more complicated in the past.
Last time I heard, film was already included in Appendix III of CITES (Read: threatened with extinction).