A woman cook in an apron is smiling at the camera with two other cooks in the background.
A woman not paying attention to the camera
A woman smiling at a camera is directing an expression to the camera which can not happen if she is not paying attention.
The woman can't not be paying attention to the camera if she is smiling at the camera
it is either the woman is  not paying attention to the camera or she is smiling at the camera.