Karen, "straight out of the camera" means the image was processed in camera using the settings that the camera operator invoked — color mode, contrast, brightness, hue, saturation, and sharpening. That's post processing, just instantaneous with the capture and, of course, not as good as can be done later on a computer with human input adjusting those parameters.
Even in the old days of film there was PP. If you took the negative to three different photofinishers you almost always got back three different-looking prints.
Jon Kandel A New York City Nikonian and Team Member Please visit my website and critique the images!