The Japanese Mamiya C330f, is still popular among photography enthusiasts as one of the best twin reflex camera for manual shooting. The first lens in this SLR camera lets you see the image and focus, while the other lens is used to click the picture. The Mamiya C330f uses 120 or 220 roll film to take pictures in a medium format ranging between 6.45 upto 6.17 inches. With the interchangeable lens system in this twin reflex camera you can use a 55 mm wide lens as well as a 250mm telephoto lens. This SLR camera has a waist level viewfinder for viewing and focusing the virtual image from a distance. The Mamiya C330f allows for extreme close-ups and is thus great for portraits.