Combining an expansive field of view with a compact form factor, the ZEISS Loxia 21mm f/2.8 Sony E Lensfrom ZEISS Loxia 21mm f/2.8 Sony E Lensis a sleek wide-angle prime, designed for full-frame Sony E-mount mirrorless cameras. Based on the Distagon optical concept, this lens uses four anomalous partial dispersion elements and one aspherical element to provide a marked reduction in chromatic and spherical aberrations for improved color rendering, sharpness, and clarity. For minimizing flare and ghosting, an enhanced ZEISS T* anti-reflective coating has also been applied to benefit working in difficult lighting conditions.

Loxia-series lenses are distinguished by their manual focus operation along with a manual aperture ring that can be de-clicked for silent operation; making them especially suitable for filmmaking applications. Loxia lenses are also characterized by their compact form factor and all-metal lens barrel, which incorporates engraved focusing and depth of field scales, for fine-tuned control. Additionally, the lens body sports a dust- and moisture-sealed design to permit its use in trying environments.

E-Mount Lens/Full-Frame Format    Aperture Range: f/2.8 to f/22    Four Low Dispersion Elements    One Aspherical Element    Distagon Optical Design    ZEISS T* Anti-Reflective Coating    Manual Focus Design    Manual Aperture Ring Can Be De-Clicked    Weather-Sealed Construction

Wide-angle prime is designed for full-frame Sony E-mount mirrorless cameras, however can also be used with APS-C models where it provides a 31.5mm equivalent focal length

Bright f/2.8 maximum aperture suits working in available-light conditions and is also well-suited for astrophotography use.

Distagon optical concept affords high sharpness, well-corrected image quality from edge-to-edge, and very low field curvature.

Four anomalous partial dispersion elements are used to significantly reduce color fringing and chromatic aberrations for increased clarity and color fidelity.

One aspherical element controls distortion and spherical aberrations in order to produce greater sharpness and more accurate rendering.

ZEISS T* anti-reflective coating has been applied to each lens surface to help minimize reflections and provide greater contrast and color fidelity.

Manual focus design is benefitted by focusing and depth of field scales along with a 90° focus ring rotational angle and hard stops at both infinity and minimum focusing positions.

Manual aperture ring has clicked indicators throughout aperture range. Using the included De-Click Tool, this ring can be mechanically 'de-clicked' for smooth, silent rotation throughout the aperture range; making it ideal for video applications.

Weather-resistant construction includes internal seals to guard against dust and moisture as well as a blue sealing ring at the lens mount to protect the lens-camera interface.

The lens mount is fitted with an electronic interface that conveys all lens Exif data to the camera and can also be configured to automatically activate the camera's focusing magnification function when turning the focus ring.

Related Questions and Answers

Q: 1. Hi, can this lens mount a UV filter? I mean If I mount a UV filter, will it produce vignette? Thanks.

A: Hi, I have a Zeiss UV filter on my Loxia 35mm. There is no problem. Without the filter, there is very slight vignetting when the lens is wide open, remarkably little compared to other wide angle lenses I own. As far as I can notice, the filter does not add to the problem.

Q: 2. Can this lens be used on a Nikon Z7 with the Techart adapter?

A: While it could work being completely manually controlled there are probably better options available to you.

Q: 3. Is it true that with this auto focus lens for astrophotography you can achieve infinity focus for stars by turning the focus ring all the way to the end where it stops? I have a difficult time focusing in the dark and this sounds too good to be true.

A: The ZEISS Loxia 21mm f/2.8 Lens for Sony E has hard stops at both infinity and minimum focusing positions, so yes, you should be able to focus manually at infinity for astrophotography usage needs.

Q: 4. Does this lens apiculture setting show on the eye piece readout on the a7 model cameras

A: Yes, the aperture setting it is perfectly visible.

Q: 5. Is focus mechanical or by wire?

A: It's mechanical, fantastic feel IMO.

Q: 6. It's the end of March and the lens is still out of stock. Any updates on expected dates? Thanks in advance

A: I apologize, but this type of request cannot be taken care of through this feature of our website. Please contact our Customer Service department by entering Live Chat, emailing directly to cs@a href= http://bhphoto.com, target= _blank bhphoto.com,/a or calling us toll-free at 800.221.5743.

Q: 7. Will the Zeiss Loxia 21mm f/2.8 Lens for Sony E Mount work with the Sony FS7?

A: Yes and the 21 mm provides a very useful field of view to work with.

Q: 8. Searching for a video lens, and auto aperture is useful to me in certain situations. If I have auto aperture selected on the a9, will the camera be able to change the aperture value of the lens, or is this lens true manual ? The description only says its manual focus.. Thanks,

A: Both aperture and focus of this lens are manual. However there is a electrical connection between the lens and camera in order to get some information such as aperture number on the camera.

Q: 9. Is this lens a focus by wire like the f/4 24mm-70mm or is it actual mechanical ring focus?

A: Ring focus, and by that I mean it's fully manual. But a beautiful process

Q: 10. What is the effective focal length of this lens on an APS--C camera?

A: The equivalent length would be close to 31mm.