The Contax U4R offers a Carl Zeiss Vario-Tessar T* 5.8-17.4mm f2.8-4.7 lens (equivalent to approx. 38mm to 115mm in 35mm film format) consisting of 6 elements in 6 groups and includes three aspheric and two high index lens elements. This Carl Zeiss Vario-Tessar T* 5.8-17.4mm lens has been developed specifically for digital usage and achieves outstanding color reproduction and rich gradations. In addition, Carl Zeiss' special multi-layer T* coating dramatically reduces flare and ghosting which results is crisp, ultra sharp images. For greater creative control, 28mm filters can be used via the included filter adapter.