DSLR users know that “good glass” is necessary no matter the sensor size, and that’s where mirrorless cameras suffer most, with limited lens selection that is often of marginal build quality and too often modest optical performance. Yet demands on optical quality tend to be higher for smaller sensor cameras due to the greater photosite density, at least for similar levels of high quality detail in the same number of megapixels (e.g. 24 megapixels from full-frame vs the smaller APS-C).
Enter the Zeiss Touit lens line for Sony NEX and Fuji- film X. The optics in the Touit lenses are optimized for the APS-C sensor size and for digital without optical design compromises for a DSLR mirror or rangefinder flange focal distance. Also, Zeiss has licensed the necessary electronic protocols from both Sony and Fujifilm for both autofocus and native camera control of the lens.
Overview of the Touit Lenses
Three lenses are available (12/2.8, 32/1.8, 50/2.8), with the 12mm and 32mm, shipped in June 2013, and a 50mm to follow in late 2013.
The Touit lenses offer a high-grade build quality, indeed an elegant feel compared to the majority of mass-produced lenses. Lens hoods are included with each lens and fit seamlessly; the 32/1.8 includes a round hood and the 12/2.8 includes a scalloped hood. Both increase the apparent lens size substantially, but add little weight. When mounted, they fit so well that they appear like a seamless extension of the lens itself. Filter threads are built-in for standard filters so that a filter or polarizer can be easily mounted (12/2.8 = 67mm, 32/1.8 = 52mm).