This ultra wide angle lens is ideal for capturing breathtaking moments in dramatic perspectives. The Distagon T* 3,5 / 18 offers excellent image performance over the entire image field. The precision floating elements design offers constant high performance over the entire distance range from 0.3 m (0.98 ft) to infinity. Optimum reflection absorption combined with the Carl Zeiss T* anti-reflex coating allow for brilliant pictures even under difficult lighting conditions. Extremely contrasting edges are captured without color fringes due to the optimal color correction. Even combined with a digital SLR using a DX type sensor, this lens has an effective focal length of 27 mm, providing an interesting wide angle perspective.