Tamron 12-20mm F2.8 Lens A084S
Overview
The Tamron 12-20mm F2.8 (Model A084) for Sony E-mount is a groundbreaking ultra-wide-angle zoom that redefines expectations in its class. Offering an unprecedented 12mm perspective—a full 2mm wider than typical 14mm offerings—it maintains a bright constant F2.8 aperture across the 12-20mm range. It packs professional-grade optics and controls into a remarkably portable design.
Key Features
Unparalleled Ultra-Wide Perspective
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Extreme 12mm Focal Length – Captures expansive scenes with dramatic perspective, emphasizing scale for architecture and landscape photography.
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Constant F2.8 Aperture – Maintains brightness throughout the zoom range, ideal for astrophotography and low-light interiors.
Outstanding Optical Performance
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Advanced Optical Construction – Features XGM and three GM aspherical elements, plus XLD and LD elements, to suppress peripheral blur and colour fringing.
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Sagittal Coma Correction – Specifically engineered to correct coma flare, ensuring high sharpness from centre to extreme corners for astrophotography.
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12-Blade Diaphragm – Produces smooth circular bokeh wide open and sharp 12-pointed starbursts when stopped down for nightscapes.
Fast Autofocus & Close-Up Capability
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VXD Linear Motor – Delivers high-speed, high-precision, and exceptionally quiet autofocus performance for both stills and video.
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Exceptional Close-Up Performance – Minimum focus distance of just 0.18m at 12mm, allowing dramatic perspectives with foreground subjects.
Professional Handling & Durability
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Comprehensive Controls – Features AF/MF switch, MF Lock, Zoom Lock, Focus Set Button, and de-clickable control ring for professional operability.
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Integrated Rear Filter Holder – Allows use of sheet-type filters for long-exposure work.
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Moisture-Resistant Construction – Built for reliable outdoor shooting with fluorine coating on the front element.
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TAMRON Lens Utility™ Compatibility – Customize functions and assign practical features for video and stills.
Conclusion
The Tamron 12-20mm F2.8 (A084S) is a revolutionary ultra-wide zoom for Sony E-mount that delivers unprecedented 12mm perspective without sacrificing speed or portability. Its exceptional corner-to-corner sharpness, sagittal coma correction, 12-blade diaphragm, and professional controls make it a standout choice for astrophotography, architecture, and landscape photography. It represents excellent value for photographers seeking the ultimate ultra-wide experience.
Tamron 12-20mm f/2.8 Specs
| Focal Length |
12 to 20mm
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| Aperture |
Maximum: f/2.8
Minimum: f/16
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| Lens Mount |
Sony E
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| Lens Format Coverage |
Full-Frame
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| Minimum Focus Distance |
7.1" / 18 cm (Wide) to 11.1" / 28.2 cm (Tele)
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| Magnification |
1:5.8 Macro Reproduction Ratio
0.11 to 0.17x Magnification
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| Optical Design |
17 Elements in 12 Groups
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| Aperture/Iris Blades |
12, Rounded
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| Focus Type |
Autofocus
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| Image Stabilization |
No
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| Dimensions |
x 4.7" / 11.9 cm (Length)
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| Weight |
1.3 lb / 570 g
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