"I made a Tin Camera in my home. It's description is: F:230mm, dia:0.56mm, f-stop:410, Film(paper) ISO:6, Exp.time:1min.12sec. I printed this positive in my home by only a 25w t.bulb by contact print using two glasses. A glosy B&W paper used as a negative & positive. Scanned with a Canon scanner and toned at Photoshop7.0."