Don't know how available Minolta film cartridges are where you live but the Minolta 16 line up does not need any perfs at all to advance the film. But as mentioned, the later MGs model and QT model have a larger frame size, 12X17mm I think, and double perf will intrude into the frame area. By far the Minolta 16II is the most available on ebay and is a simple, reliable camera. The Minolta cartridge is the easiest to reload. The limit of the 16II is it's fixed focus lens. It has a 3 element 3 group 22mm f2.8 lens that is factory set to 2.5 meters. The frame size of all Minolta 16mm cameras except the MGs and QT is 10X14mm. To change focus Minolta sold supplementary lenses to fit over the prime lens. The #0 lens is a -.25 diopter and brings focus to 10 meters, the #1 lens brings focus to 1.3 meters and the #2 to .75 meters. These three lenses are almost essential to effectively use the 16II. The most common problem found on the 16II is broken or missing front viewfinder windows. Check carefully before you buy. The Russians also built a 16mm still camera. They can use Minolta cartridges and the best one overall is the KIEV 30 (not the 30M), it has a 23mm f3.5 lens that can focus from infinity down to .5 meter. the problem with Russian cameras is variations in quality and you don't know till too late if you have a bad one or a good one. The Kiev 30 has a larger 13X17mm frame size so single or no perf film is needed.