Hasselblad 500C/M film kit

The shutter should be stored in a cocked state, i.e. wind the back after every shot. VERY IMPORTANT: DO NOT MOUNT OR UNMOUNT THE LENS IF THE SHUTTER IS NOT COCKED. The drive shaft for the lens (to cock the leaf shutter in the lens) can break if it is not in the correct orientation. The dark slide needs to be inserted before removing the back. The dark slide needs to be removed before shooting (shutter button is blocked). When you shoot, hold down the shutter button – do not release it immediately after pressing. The secondary curtains in the body only stay open as long as the button is held down. Don’t lose or bend your dark slides; you won’t be able to insert them, and without the dark slide in, you can’t remove the back, and there’s nothing to block the shutter from firing accidentally in a bag. Always wind the camera before attaching a back – if not, when you wind it, you’ll lose a frame. The right procedure for assembling a camera is 1. wind body; 2. attach lens (check that the little slot in the lens’ mount lines up with the dot, if it doesn’t, use a coin or screwdriver to turn it in the direction of the arrow – this is to cock the lens shutter); 3. slide in finder of choice; 4. load and attach back – this is a whole separate section on its own. *Taken from Ming Thein's blog.