This is a Polaroid domed white balance front lens cap designed to fit a 58mm lens. The lens cap helps protect the front lens element of the camera lens from dust, dirt, and scratches when not in use. Additionally, the white balance feature of the cap allows for accurate colour reproduction by providing a neutral reference point for setting custom white balance settings on the camera. Ideal for photographers looking to maintain lens cleanliness and achieve accurate colour balance in their photos.
eBay