Product Spotlight: Zeiss Loxia 2.8/21 Lens

With the new ZEISS Loxia 2.8/21 Zeiss is introducing a super wide angle lens for compact Sony full-frame cameras with E-mount.


Zeiss Loxia 2.8/21Zeiss LogoZeiss has recently started shipping the third lens in its Loxia series, the Loxia 2.8/21. It’s a compact, super-wide angle MF lens designed for the Sony FE camera system. The lens introduces a new optical design specially developed for high resolution, full-frame sensors such as the one used in the Sony Alpha A7S II. Like the Loxia 35 and Loxia 50, the new lens is also well suited for video applications using cameras like the Sony PXW-FS5 and PXW-FS7.

The latest member of the ZEISS Loxia family is called ZEISS Loxia 2.8/21. It is a super wide angle, developed for compact full-frame cameras with E-mount and with a new optical design based on the ZEISS Distagon. The ZEISS Loxia 2.8/21 supplements the ZEISS Loxia 2/35 and ZEISS Loxia 2/50 lenses, which were presented last year at photokina. Especially practical for cinematographers, the ZEISS Loxia 2.8/21 has the mechanical aperture setting and the de-activation of the aperture click stop, both found on all ZEISS Loxia lenses.

Loxia 28 2“Since the Sony α7 series came out, the market has been waiting for a powerful super wide-angle lens for compact full-frame cameras. For many photographers such a lens was the missing tool in their gear. ZEISS is now meeting that demand with the ZEISS Loxia 2.8/21,” said Christophe Casenave, Product Manager at ZEISS Camera Lenses.

As the latest member in the compact, light-weight family of ZEISS Loxia lenses, the ZEISS Loxia 2.8/21 offers trusted features that combine traditional photography and modern technology. The electronic interface transmits lens data (EXIF) as well as the focus movements and – if desired by the photographer – activates the magnifying function of the camera. For the sophisticated photographer who does not want to leave all the work to the camera, there are many opportunities to compose thanks to the lens’s precise manual focusing with end stop and the mechanical setting of the aperture (a perture priority mode for the working aperture). As a result, photographers can take advantage of all the possibilities offered by modern compact system cameras with an electronic viewfinder.

Optimal for different types of use

With an angular field exceeding 91 degrees (diagonal) on a full-frame camera, the ZEISS Loxia 2.8/21 is well suited for nature, landscape and architectural photography. In landscape photography in particular, an exact infinity setting is a critical factor. Here, the precise manual focusing of the ZEISS Loxia 2.8/21 supports the user enormously. Furthermore, the lens enables creative, naturally proportioned images with a low minimum object distance of just 0.25 meters (9.84”). The ZEISS Loxia 2.8/21 is extremely compact and light, making it the perfect choice for travel and street photography.

Zeiss Loxia 2.8 21

ZEISS Loxia lenses for video

Ambitious videographers will also discover once again that the ZEISS Loxia 2.8/21 is a tool that offers optimum creative potential. The mechanical deactivation of the aperture click stop for infinite aperture settings (de-click), which already came with the ZEISS Loxia 2/35 and ZEISS Loxia 2/50, is also found in the new ZEISS Loxia super wide angle. The smooth focus operation with a rotation angle of 90 degrees of the ZEISS Loxia 2.8/21 allows for the finest variations when focusing video cameras with E-mount, such as the Sony PXW-FS7 or PXW-FS5. “In addition, the identical external diameter of the ZEISS Loxia lenses across all focal lengths simplifies the changing of lenses during shoots, so accessories like a follow focus don’t need to be readjusted,” added Casenave.

Newest optical design with robust construction

Zeiss Loxia 2.8 / 21The ZEISS Loxia 2.8/21 has been specially developed for digital sensors. The newly calculated lenses consist of 11 lens elements in nine groups. The underlying optical design is a ZEISS Distagon. High resolution along the entire image field, low distortion and color fringing, and an appealing bokeh – especially at the maximum aperture of f/2.8 – round out the exceptional features of this lens. “It’s a small jewel offering outstanding optical performance,” said Casenave, summarizing the optical qualities of the ZEISS Loxia 2.8/21. Other qualities include its impressive mechanical quality and robust barrel. Made entirely of metal, the barrel protects the lens and can withstand the rugged everyday situations that professional photographers face, thereby ensuring a long product life. Like the other ZEISS Loxia lenses, the filter diameter is 52 mm. Finally, a special weather protection on the lens mount protects the lens from spray getting between the camera and lens.

Product Overview

  • Super wide-angle lens for full-frame E mount cameras, with a 91º diagonal angle-of-view
  • New optical design based on the Distagon style, with 11 elements in 9 groups
  • Mechanical aperture with option to de-click for filmmaking applications
  • Electronic interface transmits lens data and focus movements
  • Manual focus with hard stops at close-focus & infinity marks and a 90 º angle of rotation
  • Close focus of 9.84” / 0.25m
  • Same barrel diameter and 52mm filter dimensions as the Loxia 35 and Loxia 50 lenses
  • Robust construction with metal barrel and special weather sealing at the lens mount
Targeted Applications
  • Still photography
  • Ideal for street photographers who prefer to zone focus
  • A perfect landscape lens for photographers who want to travel with a smaller, lighter camera system
  • Motion capture
  • Well suited for filmmakers needing manual focus control and a continuous aperture
  • Compatible with the Sony PXW-FS5 and PXW-FS7 video cameras, as well as the Sony A7 series


Technical Specifications

Focal length 21 mm
Aperture range f/2.8 – f/22
Lens elements/groups 11 / 9
Focusing range 0.25 m (9.84”) – infinity
Working distance 0.16 m (6.30”) – infinity
Image field** (diag. / horiz. / vert.) 91° / 81° / 59°
Object field at minimum working distance** 281 mm x 187 mm (11.06 x 7.36“)
Image ratio at MOD 1 : 7.81
Rotation angle of focus ring (inf – MOD) 90°
Filter thread M52 x 0.75
Diameter (max.) 62.1 mm (2.44“)
Diameter of the focusing ring 62.1 mm (2.44“)
Length (without lens caps) 72.0 mm (2.83“)
Length (with lens caps) 85 mm (3.35“)
Weight 394 g (13.54 oz)
Camera mounts E-mount

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