these are a 1950-1960s styled cameras using the larger 6 by 6 readly avaliable 120 roll fill they are called \"clacks\" because of the noise that the shutter makes when firing now that holga photography has be come very fashionable and the cameras have shot up in price and types, these form of cameras are now still a cheaper way of creating the style and technics of holga photography they are very simple yet still have more control than dianas and holgas they are smaller and more robust with a fixed shutter speed like the dianas and holgas but have 3 apertures and a normal and bulb setting the bodies are made of baclite not plastic so gives a slightly more comfortable and solid grip or hold they are easier to load as the film area is more robust and easier to understand the photos are sharp in the center with vignetting and softer corners giving that classic old fashioned look that is perfect for landscape and portrature photography i have used then on weddings and the brides love them as the softer contrast and image quality flatters the bride and women as unlike the super sharp digitals doesnt show the warts and all so to speak movies on utube can be easly found to tweak them to bulb and pinhole photography as the whole lens and shutter assembly comes off by undoing only 5 screws with a flat bladed screw driver you can customise them the same way as the holgas and dianas they do have some disadvantages as they come in only one colour \"black\" but there is nothing to stop you painting them lens can have mould as they are now very old but can be easly disasembled and cleaned shutters can stick but a bit of lighter fuild in the guts and they are like new again as they are discovered their prices are slowly going up, ie $5-6 pounds or $10 NZ dollars should get you a mint version with its tan plastic case they use any type of 120 roll film and can be converted to 35mm as well buy one buy two, just get the film developed and scanned, do prints. people dont know that you are a good photographer unless you show them