It has come to my attention that some folks would like to give large format photography a shot. If you will email me I will be happy to send you the download site for converting a polaroid packfilm camera to shoot up to 3x4 negatives. The one I will send you free is to convert the camera keeping the polaroid lens and just changing the back. It will also explain how to make a film holder from a photo mount board. You cant use a regular graflex type film holder with the original lens. It changes the focal length of the lens and nothing will be in focus. It is a very inexpensive large format camera with auto exposure. You can also use a strobe light with it. To make time exposures you simply put black tape over the sensor and the lens stay open as long as you hold down the shutter release This information is for your own use only please do not share it.