![Zeiss Loxia 21mm f/2.8 Lens for Sony E Mount Zeiss Loxia 21mm f/2.8 Lens for Sony E Mount](https://cdn11.bigcommerce.com/s-f9fok/images/stencil/370x488/products/10239/14216/1444683991000_1189220__09600.1452629699.jpg?c=2)
The Rear Lens Cap for Loxia E-Mount Lenses from Zeiss is a replacement bayonet-style cap for the Loxia series of full-frame E-mount lenses. A rear lens cap protects the rear element and mount of the lens against scratches, moisture, dust, and fingerprints when the lens is not attached to the camera.