The Zeiss Touit 2.8/12 is an interchangeable APS-C wide-angle camera lens announced by Zeiss on September 18, 2012. Zeiss used a diagnostic optical design for this lens.
See also List of third-party E-mount lenses Fujifilm X-mount Lenses
References
http://www.dpreview.com/products/zeiss/lenses/zeiss_touit_12_2p8/specifications