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ZEISS Biogon T* 21mm f/2.8 ZM Lens

The Zeiss 21mm f/2.8 ZM is a 21mm f/2.8 lens designed for Leica M mount cameras. Used copies start from $999 on GearFocus, with buyer protection on every purchase.

ZEISS Biogon T* 21mm f/2.8 ZM Lens

ZEISS Biogon T* 21mm f/2.8 ZM Lens

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ZEISS Biogon T* 21mm f/2.8 ZM Lens

Condition: Excellent

Product Highlights

  • Wide 21mm focal length
  • Bright f/2.8 maximum aperture
  • T* anti-reflective coating
  • Compact and lightweight design

Sell your Zeiss 21mm f/2.8 ZM on GearFocus

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ZEISS Biogon T* 21mm f/2.8 ZM Lens
ZEISS Biogon T* 21mm f/2.8 ZM Lens

Excellent

$1,299.00$300 price drop

$999.00

Lens Overview — Zeiss 21mm f/2.8 ZM

The ZEISS Biogon T* 21mm f/2.8 ZM is a manual-focus wide-angle prime lens built for the Leica M mount, making it compatible with rangefinder and mirrorless camera systems that accept M-mount glass. With a fixed focal length of 21mm and a maximum aperture of f/2.8, it sits in the wide-angle category and is designed to cover a full-frame image circle. Manual focus is the sole focusing method, which suits the deliberate, considered shooting style that rangefinder photography naturally encourages.

The lens accepts 46mm filter thread accessories, keeping the overall footprint compact, and tips the scales at just 300g — a genuinely lightweight option for photographers who want a capable wide prime without adding significant bulk to their kit. Image stabilization is not present, which is typical for a lens of this design philosophy and mount type. The combination of a 21mm focal length, f/2.8 maximum aperture, full-frame coverage, and Leica M mount makes this a compelling choice for street, travel, architecture, and landscape photographers who prioritize precision manual control and the classic rangefinder shooting experience.

At 300g with a 46mm filter thread, it integrates neatly into a compact carry system.

Key Features — Zeiss 21mm f/2.8 ZM

Biogon Optical Design: The symmetrical Biogon formula minimizes distortion and delivers sharp, rectilinear rendering across the full frame — well suited to architecture and landscape work.

21mm Full-Frame Coverage: Covers a full-frame image circle, providing a wide 90-degree angle of view on full-frame M-mount bodies.

f/2.8 Maximum Aperture: Offers a useful light-gathering capability for a wide-angle prime, allowing handheld shooting in lower-light conditions.

Leica M Mount: Natively fits Leica M rangefinder bodies and is also compatible with mirrorless systems via M-mount adapters.

Manual Focus Only: Designed exclusively for manual focus, suiting the deliberate shooting style of rangefinder photography and careful composition work.

ZEISS T* Anti-Reflective Coating: Zeiss's proprietary T* coating reduces flare and ghosting, maintaining contrast and color fidelity when shooting in challenging light.

Lens Specifications — Zeiss 21mm f/2.8 ZM

Zeiss 21mm f/2.8 ZM full specifications
SpecDetail
Use CasesTravel
Lens TypeWide-Angle
FormatFull Frame
Zoom/PrimePrime
Focal Length21mm
Maximum Aperturef/2.8
Camera SystemMirrorless
Lens MountLeica M
AutofocusNo
Focus TypeManual Focus
Image StabilizationNone
Filter Thread46mm

Description — Zeiss 21mm f/2.8 ZM

The ZEISS Biogon T* 21mm f/2.8 ZM is a prime wide-angle lens designed for cameras using the Leica M mount, covering a full-frame image circle. Its fixed 21mm focal length places it firmly in wide-angle territory, well-suited for street, travel, and architectural photography where a broad field of view is an advantage. The maximum aperture of f/2.8 gives photographers the ability to work in moderate low-light conditions while keeping the lens compact.

Focusing is entirely manual, which complements the rangefinder shooting workflow and encourages a more intentional approach to composition. Weighing just 300g, the lens is easy to carry all day without fatigue, and the 46mm filter thread means accessory filters remain affordable and easy to find. With no image stabilization, users will rely on their own technique or in-body stabilization where available.

For M-mount shooters looking for a capable, lightweight wide prime, the specs here make a straightforward case.

Pros — Zeiss 21mm f/2.8 ZM

  • ✓Lightweight at 300g, ideal for travel and street photography
  • ✓Full-frame coverage ensures compatibility with full-frame M-mount bodies
  • ✓21mm wide-angle focal length offers a broad perspective for landscapes and architecture

Cons — Zeiss 21mm f/2.8 ZM

  • ✗Manual focus only — no autofocus option for users who need it
  • ✗No image stabilization, which requires steady technique in lower light
  • ✗Fixed 21mm focal length offers no zoom flexibility

Videos — Zeiss 21mm f/2.8 ZM

The Carl Zeiss Distagon 21mm f/2.8 is the Most 'Honest' Wide Lens Ever Made? — Ian Parikesit

Resources & Downloads — Zeiss 21mm f/2.8 ZM

Manuals & Guides

Frequently Asked Questions — Zeiss 21mm f/2.8 ZM

What camera mount does the ZEISS Biogon T* 21mm f/2.8 ZM use?+
This lens uses the Leica M mount. It is compatible with rangefinder and mirrorless camera systems that accept the Leica M mount standard.
Does this lens support autofocus?+
No. The ZEISS Biogon T* 21mm f/2.8 ZM is a manual-focus-only lens. All focusing must be done by hand, which is well-suited to the rangefinder shooting style.
What sensor formats does this lens cover?+
The lens is specified for full-frame coverage, so it is designed to work with full-frame cameras. It can also be used on smaller sensor formats within the M-mount ecosystem.
What filter size does the ZEISS Biogon T* 21mm f/2.8 ZM accept?+
The lens has a 46mm filter thread, which is a relatively compact and affordable filter size, making it easy to source polarizers, ND filters, and protective filters.
How much does the ZEISS Biogon T* 21mm f/2.8 ZM weigh?+
The lens weighs 300g, making it a lightweight option that pairs well with compact rangefinder and mirrorless bodies for day-long carry.
Does this lens have image stabilization?+
No, the ZEISS Biogon T* 21mm f/2.8 ZM does not include image stabilization. Photographers relying on stabilization will need to source it from their camera body if supported.

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