Used Contax G 21mm F/2.8 W/ GF-21MM | U9

Used Contax G 21mm F/2.8 W/ GF-21MM | U9

Name: Used Contax G 21mm F/2.8 W/ GF-21MM | U9
Brand: Contax
SKU: USECONG21F28WGF21-U9
Price: 999.99 USD
Availability: InStock

SKU:USECONG21F28WGF21-U9

MANUFACTURER PART:USECONG21F28WGF21-U9

Used

PRODUCT RATING:9

$999.99

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Used Contax G 21mm F/2.8 W/ GF-21MM | U9
Generic lens cap
Generic rear lens cap

Lens — General Brand: Carl Zeiss Model: Biogon T* 21mm f/2.8 Mount: Contax G Format: 35mm full-frame Focal Length: 21.5mm actual Lens Type: Ultra-wide-angle prime Focus: Autofocus through Contax G-series cameras; manual focus is controlled through the camera Release: 1996 Image Stabilization: None Catalog Number: 10 49 37 Country of Manufacture: Japan
Optical Specifications Optical Design: Biogon Elements: 9 Groups: 7 Maximum Aperture: f/2.8 Minimum Aperture: f/22 Diaphragm: 7 straight blades Diagonal Angle of View: 90° Horizontal Angle of View: 80° Vertical Angle of View: 59° Image Format: 24 × 36mm Maximum Magnification: Approximately 1:20.1 Minimum Focus Distance: 0.5m / 1.64 ft Close-Focus Field: Approximately 485 × 728mm
Optical Performance ZEISS T Coating:* Yes Distortion: Extremely low for such a wide-angle lens Rendering: High contrast, strong color saturation, and excellent detail reproduction Design Character: Nearly symmetrical Biogon design Best Performance: Particularly strong at infinity and for architecture/interiors Low-Light Capability: f/2.8 maximum aperture is suitable for available-light photography
Focusing Focus Range: 0.5m–∞ Focus System: Contax G autofocus connection Camera Compatibility: Designed for Contax G-series autofocus cameras G1 Compatibility: Requires a compatible/updated G1 body for the 21mm lens G2 Compatibility: Fully compatible with the Contax G2 Manual Focus: Via camera's focusing mechanism, not a conventional manual-focus helicoid
Physical Specifications Diameter: Approximately 59mm Length: Approximately 35–35.5mm Weight: Approximately 180–200g depending on specification/reference Filter Thread: 55mm Front Filter: 55mm screw-in Construction: Metal-bodied Contax G-series lens Weather Sealing: No formal weather-sealing specification
GF-21mm Viewfinder Model: Contax GF-21 Type: External optical viewfinder Purpose: Dedicated finder for the 21mm Biogon Mounting: Camera hot shoe Framing: Bright-line 21mm frame Field of View: Approximately 90° diagonal Focus: Fixed-focus finder; it does not perform rangefinder focusing Parallax Compensation: Framing designed for the 21mm lens Diopter Adjustment: None Spirit Level: None Included with Lens: Commonly bundled with the 21mm Biogon package
Accessories GF-21 External Viewfinder: Included with original lens package Front Cap: 55mm GK-51 snap-on cap Rear Cap: GK-R2 Lens Case: Biogon case Filter: 55mm screw-in filters supported
Compatibility Contax G1: Yes, with appropriate ROM/firmware modification Contax G2: Yes Contax G Mount: Yes Contax G3: No such production body exists Digital Adaptation: Possible with third-party Contax G-to-mirrorless adapters, although the lens's original autofocus mechanism was designed for Contax G bodies.

The Carl Zeiss Biogon T 21mm f/2.8 for Contax G* is a premium ultra-wide-angle rangefinder lens renowned for its extremely low distortion, high contrast, and excellent resolution. Its nearly symmetrical 9-element/7-group Biogon design provides a dramatic 90° diagonal field of view while maintaining impressive optical correction. The dedicated GF-21 external viewfinder is included to provide accurate 21mm framing because the Contax G's built-in finder does not cover this focal length. With its compact metal construction, f/2.8 aperture, and exceptional wide-angle rendering, it is particularly well suited to architecture, interiors, landscapes, street photography, and documentary work.

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