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Zeiss Touit: Compatibility and Performance
The Zeiss Touit lenses for Sony NEX and Fuji X are reviewed in depth in Guide to Mirrorless.
May 2013 Q&A from Carl Zeiss Inc.
Which bayonet mounts are currently available?
- Sony's E mount (for Sony NEX cameras).
- Fujifilm's X mount (for Fujifilm X cameras).
What about compatibility with common filters? What size filter do I need for these lenses?
ZEISS Touit lenses feature a standard filter thread. The Touit 2.8/12 has an M67 and the Touit 1.8/32 an M52. All standard camera filters with the corresponding diameter can be used on these lenses. When the lens shade is removed, the adapter ring of a slot-in filter system with the corresponding filter diameter can be attached. For optimal results, we recommend the ZEISS T* UV or POL filter optimized for our lenses.
What firmware has to be installed on the camera to achieve ideal image results? Why doesn't the autofocus work in the video mode of my Sony NEX camera?
For optimal compatibility, we recommend using ZEISS Touit lenses on Sony NEX cameras with firmware version 1.02 or later, or Fujifilm X cameras with firmware version 2.03 or later.
On Sony NEX cameras with firmware version 1.02 or older, errors may occur when using the autofocus in the video mode. In order to also use Touit lenses on Sony NEX cameras with autofocus in the video mode, a firmware newer as 1.02 must be installed on the NEX camera.
From August 2013, all NEX camera models in the 5, 6 and 7 series will be delivered with the required firmware version. A firmware update will be available for users of earlier NEX cameras in these series. Information of the firmware version of your camera can be found in the camera menu. Please see the user manual for instructions. You can obtain more information on firmware updates from your dealer or directly from the camera manufacturer.
Are Touit lenses weatherproof?
Touit lenses are designed for common situations. Protection against environmental influences exceeding common dimensions is not provided. Touit lenses can be used in a temperature range of -10°C to +55°C.
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What makes these lenses better than comparable focal lengths from Sony or Fujifilm?
ZEISS does not want to enter into a competition here. We believe that every single lens has its own optimal field of application. With ZEISS lenses, we pay special attention to delivering products featuring high-quality workmanship for decades of use. We also do our utmost to ensure particularly impressive imaging performance that enables you to capture extraordinary moments with the quality they deserve. Focusing on these strengths is what generally separates ZEISS lenses from most other lenses on the market.
How does the performance of the Touit 2.8/12 compare to the Distagon T* 3,5/18 and ￼Distagon T* 2.8/21 SLR lenses? Is the Touit 2.8/12 on a Fujifilm X or Sony NEX camera an adequate replacement for the Distagon T* 2,8/21 on a DSLR camera?
The Touit 2.8/12 on a Fujifilm X or Sony NEX camera provides the same viewing angle as the Distagon T* 3,5/18 ZE/ZF on a full format DSLR camera. With comparable camera sensors, comparable image quality can be achieved.