Well, this is my first thread in this category. I have always wanted to get started in pinhole photog but was never motivated enough until I read the July 2007 Black and White Photography. On one of the front pages was an article in which a gentleman had taken matchboxes and atached two rolls (one full and one empty) of 35mm film to either side and light tighted it with electrical tape. So, I spent $11.28 tonight and purchased enough supplies to make three cameras and have already taken the first picture. The pinhole is about .1mm and the matchbox is about 10mm deep. So I am guessing my aperture at f100. I will get more precise at work tomorrow. So an indoor self portrait under diffuse incandescant light using 400 speed film with an aperture of f100 I am thinking, allowing for reciprocity of an exposure time of 1 minute. Well not wanting to chance sitting still for a minute, I went for thirty seconds. I'll see how it and others go. I will post photos of the camera and also the images made with it, provided they are any good.