If your camera produces pink images, this has to do with the mechanical IR filter (infrared filter). This is pushed in front of the lens when taking night photos. This is why a slight "clack" sound can be heard during the first night photo of a new dark period. When the camera switches to day mode, the filter folds away again.
If the filter does not fold away, it is stuck or the light sensor has malfunctioned. Pink images are often only a temporary phenomenon, as the precision mechanics sometimes suffer from the temperature fluctuations.
If pink images appear regularly, please contact us via the contact form (link at the bottom of the page).