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Compact and wide-angle
in one

Loxia 2.8/21

Compact, wide-angle and powerful – these are the properties that make the super wide-angle Loxia 2.8/21 so special. The optical design has been specially developed for high-resolution, full-frame sensors of the mirrorless Sony α series. A system expansion through the new ZEISS Loxia – in a focal length range that has a long tradition at ZEISS.

Loxia 2.8/21

Compact and wide-angle in one

Loxia 2.8/21

Compact and wide-angle in one

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    Horizonte Zingst

    06/02/2016 - 06/06/2016
    Germany, Zingst

    The Media Production Show 2016

    06/09/2016 - 06/10/2016
    United Kingdom, Business Design Centre, Islington, London, N1 0QH

    Photo + Adventure Duisburg

    06/11/2016 - 06/12/2016
    Germany, Duisburg

    Any Questions?

    ZEISS Loxia 2.8/21

    Compact and wide-angle in one

    Despite its compactness, the super wide-angle ZEISS Loxia® 2.8/21 offers outstanding image performance – across the entire image field of a full-frame sensor. Whether architecture, landscape or also three-dimensional subjects in close-up against a spacious background – this focal length with its large image angle is an excellent addition to the Loxia lens family. It is an absolute must for wide-angle fans who want to capture even the tiniest details of a special moment in a photo or on film.

    ZEISS Loxia lenses were specifically designed for Sony α7 cameras. This means that they can make the most of the mirrorless, full frame system, while giving you all the creative possibilities of ‘classic’ photography with manual focus at the same time.

    And that’s not all: ZEISS Loxia lenses also provide everything you need to shoot high quality video, such as the unique DeClick feature for smooth adjustment of the aperture, for example.

    Technical specifications:

    Focal length 21 mm 
    Aperture range f/2.8 – f/22 
    Focusing range 0,25 m (9.84”) – ∞ 
    Number of elements/groups 11 / 9 
    Angular field, diag./horiz./vert. 91° / 81° / 59° 
    Coverage at close range 281 x 187 mm (11.06 x 7.36″) 
    Filter thread M52 x 0,75 
    Dimensions (with caps) 85 mm (3.35″) 
    Weight 394 g (0.87 lbs) 
    Camera mounts E-Mount


    Loxia 2.8/21

    In SLR systems, when extremely large image angles are needed, the distance between the rear element and the image plane must be considerably longer than the focal length – the original field of application of Distagon lenses. This advanced retrofocus design can also be put to outstanding use in modern, highly corrected lenses with longer focal lengths.

    Distagon with 11 lens elements in 9 groups
    Lens made of special glass with anomalous partial dispersion
    Lens with aspheric surface


    Loxia 2.8/21

    DeClick feature

    One completely new feature of the Loxia lens is that you can ‘declick’ the aperture’s locking mechanism using a tool (supplied) and an adjustment screw on the bayonet surface. This means that for video applications, you can smoothly eliminate any unwanted differences in brightness as you pan the camera. This feature can also be used with other video systems whose size makes them suitable for adaption.

    Precise manual focus

    Manually focusing a lens means controlling the image result from your fingertips. A good ergonomic design makes all the difference. ZEISS lenses stand out with their large rotation angle which enables precise focusing. Changes are immediately visible in the viewfinder. The high-quality focusing mechanism moves smoothly without play, thus also supporting the intuitive interaction with the focal plane. The precise engraving in meter and feet, and the depth of focus scale provide additional support for manually focusing.

    Virtually distortion-free optics

    Dramatic perspectives and a view from extraordinary image angles – ZEISS lenses open up new composition possibilities. Distortion would disrupt the composition because straight lines, whose image does not go through the image center, would be reproduced with a curved shape.  This annoying effect is accordingly and largely compensated through elaborate optical designs at all focal lengths.

    High-grade full-metal casing

    Tangible quality that holds its value is what qualifies ZEISS lenses for decades of hard use. A precision-engineered full-metal casing, grippy focus and aperture rings made of metal, and a tough front bayonet and filter screw guarantee stunning photographic results. A special sealing ring on the bayonet also protects the interface between the camera and the lens.

    Full frame compatible

    ZEISS lenses are suitable for digital Sony Alpha cameras and have been optimized for film and sensors up to full 35 mm format (24 x 36 mm).

    Community Comments

    Loxia 2.8/21

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    Blog Articles

    Loxia 2.8/21

    The star gazer
    Gear | 2015-12-16 14:23:17 |

    The star gazer

    What does a professional photographer want for Christmas? Probably a camera. And after that, of course, a lens with that one focal length that was always missing in the lens case until now. Christian Dandyk, a photographer from Berlin, asked himself the same question. “I’ve always wanted a Loxia from ...


    Sony Alpha, Loxia and Tradition - Interviewing Christophe Casenave from ZEISS
    Gear | 2015-12-07 16:43:18 |

    Sony Alpha, Loxia and Tradition - Interviewing Christophe Casenave from ZEISS

    Finnish Sony Alpha-photographer and a true Loxia fan Toni Ahvenainen talked with Christophe Casenave from ZEISS, who is, not only a product manager for the Loxia lens family, but also a truly enthusiastic expert when it comes to lens design. Join in while they talk about the Sony Alpha cameras, ...


    Gear | 2015-10-27 13:24:45 |

    New ZEISS Loxia 2.8/21 and Milvus lenses for video in low light conditions

     "On the a7S II I used the brand new Zeiss Loxia 21mm f2.8 and the Milvus 50mm f1.4 and 100mm f2.8 macro with a Metabones EF to E-mount adapter. ...


    ZEISS Loxia 2.8/21: Wide-angle jewel for full-frame mirrorless
    Gear | 2015-10-13 21:49:09 |

    ZEISS Loxia 2.8/21: Wide-angle jewel for full-frame mirrorless

    The super wide angle, developed for compact full-frame cameras with E-mount and with a new optical design based on the Distagon, supplements the Loxia 2/35 and Loxia 2/50, which were presented last year at photokina.“Since the Sony α7 series has been stirring up the photography market, the calls for ...


    The ZEISS 21mm f/2.8 Loxia Lens Review for Sony FE. In pictures. By Steve Huff
    Gear | 2015-10-12 08:58:53 |

    The ZEISS 21mm f/2.8 Loxia Lens Review for Sony FE. In pictures. By Steve Huff

    By Steve HuffAbout 2 weeks ago I received an email from ZEISS asking me if I wanted to review a new prototype lens for the Sony A7 system (FE). Now, of course I was not about to let this opportunity to test and review ...



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