The subminiature camera is a 16 mm film compact camera or 8 mm, it has a. This type of camera is there, but the quality and performance of the camera. Some cameras have a wide range of mechanisms and mechanical automatic metering. This type of camera system to find a clear term. Form, easy to use, smaller and cheaper cameras 35 mm single-lens reflex. The obvious difference is that the viewfinder image and find the depth of field is separated from the lens, used to record the image. So when this type of camera. Nearby, will occur between overlapping images, visible with images on film. Changing lenses, it could not make the picture angle to view the image in the viewfinder, so this kind of camera lens fixed mount.