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Contax 21mm f/2.8 MM Lens

The Contax 21mm f/2.8 MM is a 21mm f/2.8 lens designed for Contax/Yashica mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Contax 21mm f/2.8 MM Lens

Contax 21mm f/2.8 MM Lens

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Lens Overview — Contax 21mm f/2.8 MM

The Contax 21mm f/2.8 MM is a manual-focus prime lens built for the Contax/Yashica mount system. Covering a full-frame image circle, this wide-angle lens offers a fixed 21mm focal length and a maximum aperture of f/2.8, giving photographers a solid combination of field of view and light-gathering capability for a lens in this focal length range. As a prime lens, it delivers a fixed perspective that encourages deliberate, considered framing — a quality that has made wide-angle primes like this a lasting favorite among photographers who shoot architecture, landscapes, street, and environmental portraiture.

The lens is entirely manual focus, meaning no autofocus motor is present, which keeps operation simple and tactile. With an 82mm filter thread, it accommodates large-diameter filters for creative or protective use. Weighing in at 500g, it has a substantial feel in the hand, consistent with the robust construction expected of Contax-era glass.

The Contax/Yashica mount makes it compatible with a range of C/Y mount bodies, and with appropriate adapters, it can be used on a variety of modern mirrorless and DSLR systems for photographers who appreciate vintage glass.

Key Features — Contax 21mm f/2.8 MM

21mm Full-Frame Prime: Fixed 21mm focal length covers a full-frame image circle, delivering a broad field of view suited to architecture, landscapes, and street photography.

f/2.8 Maximum Aperture: Relatively fast aperture for a 21mm lens allows shooting in lower light and provides some background separation at wider distances.

Contax/Yashica Mount: Native C/Y mount fits Contax and Yashica SLR bodies, and adapts readily to modern mirrorless systems from Sony, Fujifilm, and others.

Zeiss Optical Design: Built to Carl Zeiss specifications, this lens delivers the contrast and edge-to-edge sharpness characteristic of Contax-era glass.

MM Designation: MM (MultiMode) version is compatible with both aperture-priority and program exposure modes on supported Contax bodies.

Manual Focus Operation: No autofocus motor means focus is handled entirely by hand, offering direct tactile control well-suited to deliberate, careful shooting.

Lens Specifications — Contax 21mm f/2.8 MM

Contax 21mm f/2.8 MM full specifications
SpecDetail
Use CasesLandscape, Architecture, Creative Effects
Lens TypePrime
FormatFull Frame
Zoom/PrimePrime
Focal Length21mm
Maximum Aperturef/2.8
Camera SystemDSLR
Lens MountContax/Yashica
AutofocusNo
Focus TypeManual
Image StabilizationNone
Filter Thread82mm

Description — Contax 21mm f/2.8 MM

The Contax 21mm f/2.8 MM is a full-frame covering prime wide-angle lens built for the Contax/Yashica mount system. With a fixed 21mm focal length and a maximum aperture of f/2.8, this lens delivers a wide field of view suited to landscape, architectural, street, and environmental photography. It is a manual focus lens with no autofocus capability, putting focus control entirely in the photographer's hands for a tactile, deliberate shooting experience.

The 82mm filter thread accommodates a full range of large-diameter filters. Weighing 500g, the lens has a reassuring heft typical of classic Contax-era glass. There is no image stabilization built into the lens.

For photographers working with vintage or adapted glass, the Contax/Yashica mount opens up compatibility with both native C/Y bodies and, via adapters, a wide range of modern camera systems.

Pros — Contax 21mm f/2.8 MM

  • ✓Wide 21mm focal length on a full-frame covering prime lens offers a broad field of view
  • ✓Maximum aperture of f/2.8 provides useful light-gathering at this focal length
  • ✓Large 82mm filter thread supports a wide range of filter accessories

Cons — Contax 21mm f/2.8 MM

  • ✗No autofocus support — manual focus only, which may not suit all shooting situations
  • ✗No image stabilization, which can be a challenge in low light at wider shutter speeds
  • ✗Contax/Yashica mount is a legacy system; native body options are limited without an adapter

Videos — Contax 21mm f/2.8 MM

CONTAX Zeiss 28mm 2.8 | Why this is My Favourite Lens ( BMPCC 6K / Pro user ) — Of Two Lands

Resources & Downloads — Contax 21mm f/2.8 MM

Manuals & Guides

Frequently Asked Questions — Contax 21mm f/2.8 MM

What camera mount does this lens use?+
This lens uses the Contax/Yashica (C/Y) mount. It is designed for cameras with this native mount, though it can also be adapted to many modern mirrorless and DSLR systems using third-party adapters.
Does this lens have autofocus?+
No, this lens is manual focus only. There is no autofocus mechanism, so the photographer must focus by hand using the focus ring.
What sensor formats is this lens compatible with?+
This lens covers a full-frame image circle, making it fully compatible with full-frame cameras. It can also be used on crop-sensor bodies with the appropriate mount adapter.
What filter size does this lens require?+
The lens has an 82mm filter thread, so you will need 82mm diameter filters for use with this lens.
Does this lens have image stabilization?+
No, this lens does not include any form of image stabilization. Any stabilization would need to come from an in-body stabilization system on the camera being used.
How much does the lens weigh?+
The lens weighs 500g, giving it a solid, substantial feel consistent with vintage prime lens construction.

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