* Item pictured for illustrative purposes only, actual item not pictured. See ‘Notes’ next to grade for included items.
Contax 21mm f/2.8 Zeiss Biogon T* Lens for G-Series, Titanium {55} with Finder (for G2, Modified G1 Body)
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KEH Certified™ pre-owned gear, expertly inspected†
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All rental gear is between Excellent and Like New Minus condition
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Standard accessories included
Zeiss Biogon T* 21mm f/2.8 for Contax G, titanium finish with dedicated finder
The Biogon T* optical design earns its reputation in wide-angle work: symmetrical construction keeps distortion low and maintains edge-to-edge rendering that flattered the G system's film plane. At 21mm with a f/2.8 maximum aperture, this lens sits at the wider end of the G mount's native lineup, giving street and documentary shooters meaningful coverage without switching systems. The 55mm filter thread means standard circular polarizers and UV filters fit without adapters.
The included dedicated 21mm viewfinder is not an accessory afterthought, it's a practical necessity. The G system's built-in finder does not frame 21mm, so the dedicated finder attaches to the body and is what you'll actually compose through. Without it, shooting at this focal length on a G body becomes guesswork. This lens is compatible with the Contax G2 and with modified G1 bodies. The titanium finish gives it a build character consistent with the G system's construction standards, and it pairs visually with the G2's own profile. For anyone already invested in the G system, the 21mm Biogon is the wide-angle option the system was built around.
Who It's For
Street photographers shooting in tight urban spaces get the 21mm field of view with a f/2.8 aperture that handles low light without forcing a tripod. Documentary and travel shooters who want a wide lens compact enough to carry all day will appreciate that the G system's autofocus-capable body keeps the workflow moving. Film photographers building a G-mount kit who need a genuine ultra-wide option will find the Biogon T* optical design delivers the rendering that made Zeiss glass sought after on medium-format and 35mm systems alike. The included dedicated finder makes this a complete, ready-to-shoot package.
Key Features
- Zeiss Biogon T* optical design with symmetrical construction
- 21mm focal length with f/2.8 maximum aperture
- Includes dedicated 21mm viewfinder for accurate composition
- Contax G mount compatible with G2 and modified G1 bodies
- Titanium finish with premium build quality
- 55mm filter thread for standard accessories
FAQ
- Why do I need the dedicated 21mm finder if the Contax G2 has a built-in rangefinder?
- The G2's built-in finder does not frame 21mm focal length. The dedicated 21mm finder that comes with this lens is essential for accurate composition and focus confirmation at this wide angle.
- Is this lens compatible with both G1 and G2 bodies?
- It's compatible with the Contax G2 directly. For G1 bodies, compatibility requires modification to the body, so you'll want to verify your specific G1 is set up for this lens before purchasing.
- What filter size does the 21mm Biogon use?
- 55mm filter thread. Standard circular polarizers and UV filters fit without adapters.
- What's the optical advantage of the Biogon design at 21mm?
- The symmetrical Biogon construction keeps distortion low and maintains edge-to-edge rendering across the frame, which matters on film where edge softness is unforgivable.
- Does the titanium finish affect handling or durability?
- The titanium finish gives the lens a premium feel and durable construction quality consistent with the G system's build standards. It's a material choice that reflects the system's overall design philosophy.
- Is the 21mm Biogon the only wide-angle option for the Contax G system?
- This is the wide-angle lens the G system was built around. It's the standard wide-angle focal length for the mount.
| Specification | Value |
|---|---|
| Focal Length | 21mm |
| Max Aperture | f/2.8 |
| Mount | Contax G |
This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.
| Brand Name | Contax |
|---|---|
| Filter Size | 55mm |
| Focus Type | Autofocus (camera motor) |
| Lens Mount | Contax G |
| Lens Type | Ultrawide |
| Max Focal Length | 21mm |
| Min Focal Length | 21mm |
Learn what to expect from each condition, cosmetically. Images are representative of each grade and may not show the exact item you receive. All equipment is guaranteed to work as intended, unless otherwise noted. We also occasionally offer items that fall .
Exceptions
- New
- New in box complete with manufacturer's USA warranty. Not previously owned or used.
- Like New
- Essentially new with no signs of use. “Open box.” In manufacturer's packaging with original accessories and instructions. 180-day warranty.
- As Is
- Non-functional or damaged. Equipment will not work. Usable for parts. Not covered under KEH warranty and non-returnable.
Like New Minus
Like New Minus
Barely used with virtually no traces of wear. Only the closest inspections will reveal slight use. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Excellent Plus
Excellent Plus
Lightly used with limited signs of wear. Exceptionally nice but may have slight wear on finish visible. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Excellent
Excellent
Noticeably used with average signs of wear. Shows moderate wear for the age of the item, with the possibility of blemishes and/or minimal dings. Lens glass may have average dust and zoom/focus ring tension may have slight looseness or tightness overall, but will not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Bargain
Bargain
Frequently used with above-average wear. May have dents, dings, or finish loss. Lens glass may have small scratches, dust, and blemishes, and zoom/focus ring tension may have moderate looseness or tightness overall, but should not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Ugly
Ugly
Heavily used with extensive visible wear. Equipment is rough, with multiple impressions in the finish, excessive finish loss and brassing. Glass will have marks, fungus and/or heavy/cloudy haze which could affect picture quality. Accessories usually not included, unless noted in listing. Not covered under KEH warranty.
