gabriel531 writes: Here’s my most ambitious pinhole project yet – a 6×6 camera for 120 roll film with a bellows that can be pulled in to 50mm and extended to 90mm. The camera also has two pinholes – a 0.27 mm for the 50mm setting (equals f185) and a 0.36 mm pinhole for 90mm (equals [...]

Mark O’Brien has written a generic instruction manual for using old folding cameras. Contains heaps of example pictures and should be enough to get you started. Download PDF Folding cameras are usually quite reasonably priced, are easy to carry, generally have good optics, and can provide an inexpensive way into medium format. While this PDF [...]