How long it takes an old fashioned camera to take a picture depends on the camera, the film, the lens, and if it has a flash. Usually, it was a fraction of a second.
This depends on what you mean by the first photo.
Many people came up with impermanent photos using a camera abscura.The first
photo of known permanance took all afternoon,this is thought to be...
Instead of the photos being on film, they are saved onto a memory card. This allows you to remove the card, print the photos you want, and re-use the card as much as you want. Just be sure to not...