The Zeiss Milvus 18mm f/2.8 ZE Lens for Canon EF Mount is a wide angle with distortion control for a dynamic perspective that is more accurate than in your average wide lens. It is a manual focus only lens that sports a comfortable rubberized ring for precision control over your focus. The Zeiss Milvus 18mm can be paired with both full frame and with crop frame sensor cameras. The focal length equivalent on crop frame sensors is 28.8mm. Weather sealing allows you to shoot in almost all conditions. You can shoot as close as just under 10" from your subject for exaggerated effects and the weather sealing allows you to shoot in almost all conditions. This lens is ideal for landscapes, cityscapes, and interior/architectural photography.