Hi @feidna. It does sound like the protective film was not removed when the Doorbell 3 was initially installed. Exposure to the weather over the years may have caused the adhesive to adhere pretty well to the Doorbell's lens, which is likely what is left over after you removed the film. You can try to lightly clean the lens with a microfiber cloth and a mixture of water and isopropyl alcohol, which is just rubbing alcohol. Make sure to apply this mixture to your washcloth and not directly to the Doorbell lens. If that doesn't work and the lens on your Doorbell still seems hazy or cloudy, please follow up with our [support team](https://support.ring.com/hc/en-us/articles/360036196372-Contact-Us) to explore other options. If you are outside of the US, please visit [here ](https://support.ring.com/hc/en-gb/articles/213608406)to see how to contact support.