Selling this Yashica GS camera for parts as is because I cannot get the battery door off to test this camera. Therefore I have no idea if it's functioning or not because of the battery door being stuck. I can tell you that I can wind and fire the camera and the shutter does operate but obviously just at the default speed because there's no battery. Rangefinder is also working as are the aperture blades. Again selling this for parts as is no returns because of this battery cover issue.