TAMRON 20mm F/2.8 F050: Ultra-Wide Lens with 1:2 Macro
The TAMRON 20mm F/2.8 Di III OSD M1:2 (Model F050) is a compact ultra-wide-angle prime lens designed for full-frame Sony E-mount mirrorless cameras. Combining a 20mm focal length with a bright F/2.8 aperture and an impressive 1:2 maximum magnification ratio, the lens offers a unique combination of ultra-wide perspective and close-up capability.
Launched on January 30, 2020, the TAMRON 20mm F/2.8 F050 was developed for photographers who want to explore creative wide-angle compositions while maintaining the ability to get extremely close to their subjects. Its compact 220g design also makes it well suited to everyday photography, travel and outdoor shooting.
What Is the TAMRON 20mm F/2.8?
The TAMRON 20mm F/2.8 is a fixed-focal-length ultra-wide-angle lens for full-frame Sony E-mount mirrorless cameras.
Its 20mm focal length provides a 94°30′ diagonal angle of view, allowing photographers to capture expansive scenes while maintaining a strong sense of perspective. The lens is particularly useful for landscapes, architecture, travel, street photography and other subjects where a wide field of view is important.
Unlike many conventional ultra-wide lenses, the 20mm F/2.8 F050 can also focus extremely close, giving photographers more creative control over the relationship between foreground and background.
20mm Ultra-Wide Perspective
The 20mm focal length provides a distinctly wide perspective that can change the way photographers approach a scene.
For landscape photography, the lens can capture broad views while allowing nearby foreground elements to become a strong part of the composition. In architecture and interiors, the wide angle helps fit more of a scene into the frame.
The perspective is also useful for travel and street photography, where photographers may need to work in confined spaces while still capturing enough of the surrounding environment.
Because it is a fixed focal length, the TAMRON 20mm lens encourages photographers to think about composition by moving around the subject rather than relying on a zoom.
F/2.8 Aperture for Creative Photography
The F/2.8 maximum aperture provides additional flexibility when shooting in challenging lighting conditions.
The bright aperture allows more light to reach the camera sensor, making the lens suitable for evening scenes, interiors and other situations where available light is limited.
At close focusing distances, the F/2.8 aperture can also help separate the subject from the background. Combined with the wide 20mm perspective, this can create dramatic images where a nearby subject appears prominent while the surrounding environment remains visible.
1:2 Magnification for Close-Up Photography
One of the defining features of the TAMRON 20mm F/2.8 F050 is its close-focusing capability.
The lens has a minimum object distance of just 0.11m, or approximately 11cm, and provides a maximum magnification ratio of 1:2. This means subjects can be reproduced at half their actual size on the camera sensor.
This capability opens up creative possibilities beyond traditional wide-angle photography.
Photographers can move very close to flowers, food, objects and other subjects while retaining a significant amount of the surrounding environment. Close objects appear larger while distant objects become smaller, creating an exaggerated sense of depth.
This makes the 20mm F/2.8 1:2 macro capability particularly useful for environmental close-ups and creative compositions.
Dramatic Close-Up Perspectives
The combination of a 20mm focal length and 0.11m minimum focusing distance allows photographers to experiment with perspective in ways that are difficult to achieve with conventional macro lenses.
A subject placed very close to the front of the lens can appear dramatically larger, while the wide field of view keeps the background visible.
This technique can be useful for:
- Flower and plant photography
- Food photography
- Product details
- Travel subjects
- Environmental portraits
- Creative still life
- Outdoor close-ups
The result is a perspective that combines the intimacy of close-up photography with the expansive view of an ultra-wide lens.
Compact and Lightweight Design
The TAMRON F050 was designed specifically for compact mirrorless camera systems.
The lens measures approximately 64mm in length and weighs just 220g for the Sony E-mount version. Its compact dimensions make it easy to carry as an everyday lens or include as part of a lightweight travel kit.
The relatively small size is particularly useful for photographers who want an ultra-wide prime without carrying a large or heavy lens.
High-Resolution Optical Performance
The 20mm F/2.8 F050 is designed to provide high-resolution performance suitable for modern full-frame image sensors.
Its optical construction consists of 10 elements in 9 groups and includes special optical elements designed to suppress aberrations.
TAMRON uses LD (Low Dispersion) and GM (Glass Molded Aspherical) elements to help control optical aberrations and maintain image quality. The lens also incorporates TAMRON’s BBAR (Broad-Band Anti-Reflection) coating to minimize stray light and lens flare.
Quiet OSD Autofocus
The lens uses TAMRON’s OSD (Optimized Silent Drive) autofocus system.
The OSD motor is designed to provide quiet focusing operation, making the lens suitable for both still photography and video applications.
The lens is also compatible with camera-specific functions including Sony’s Fast Hybrid AF and Eye AF, providing additional autofocus functionality when used with compatible Sony cameras.
Moisture-Resistant Construction
The TAMRON 20mm lens features moisture-resistant construction and a fluorine coating.
These features provide additional protection and convenience when shooting outdoors. The fluorine coating helps make the front lens element easier to clean, while the moisture-resistant construction helps the lens handle demanding outdoor environments more comfortably.
As with any camera equipment, moisture resistance should not be considered complete protection against water or severe weather.
67mm Filter Compatibility
The 20mm F/2.8 F050 uses a 67mm filter size.
The 67mm filter diameter was designed to match other TAMRON full-frame mirrorless lenses, allowing photographers who already use compatible TAMRON lenses to share filters between lenses.
This can be particularly useful for landscape and travel photographers who regularly use circular polarizers, neutral-density filters or other 67mm accessories.
Sony E-Mount Full-Frame Compatibility
The TAMRON 20mm F/2.8 Di III OSD M1:2 was developed for Sony E-mount full-frame mirrorless cameras.
The lens can also be used on compatible APS-C Sony cameras, where the smaller sensor produces a narrower effective field of view.
For full-frame users, however, the lens delivers its intended 20mm ultra-wide perspective and 94°30′ diagonal angle of view.
Product Features
- Enhanced close-focusing capability expands lens. The MOD (Minimum Object Distance): 0.11m (4.3 in)
- 67mm filter diameter, same as all other Tamron lenses for full-frame mirrorless cameras.
- Superb high-resolution performance that matches the latest high-resolution image sensors.
- Superior design and consistent 64mm (2.5 in) overall length facilitate ease-of-use.
- Silent autofocus driven by OSD (Optimized Silent Drive) DC motor.
- Moisture-Resistant Construction and Fluorine Coating contribute to a comfortable, user friendly photographic experience.
- Compatible with various camera-specific features including Fast Hybrid AF and Eye AF.
Who Is the TAMRON 20mm F/2.8 For?
The TAMRON 20mm F/2.8 F050 is designed for photographers who want a compact ultra-wide prime with unusual close-focusing capability.
It is particularly suited to:
- Landscape photography for expansive scenes and dramatic foregrounds
- Architecture and interiors where a wide field of view is useful
- Travel photography where a lightweight lens is important
- Street photography for immersive environmental compositions
- Astrophotography where the F/2.8 aperture and wide perspective can be useful
- Close-up photography using the 0.11m minimum focusing distance
- Creative photography that combines an ultra-wide perspective with close subjects
Understanding the TAMRON F050
The TAMRON 20mm F/2.8 Di III OSD M1:2 (Model F050) stands out because it combines three important characteristics in a compact lens: an ultra-wide 20mm focal length, a bright F/2.8 aperture and a 1:2 maximum magnification ratio.
Its 0.11m minimum object distance allows photographers to move extremely close to their subjects, creating dramatic compositions that combine large foreground subjects with expansive backgrounds.
At the same time, its 220g weight, 64mm length and 67mm filter size make it a practical lens for photographers who prioritize mobility.
Conclusion
The TAMRON 20mm F/2.8 F050 offers a distinctive combination of ultra-wide perspective and close-up capability.
With its 20mm focal length, F/2.8 aperture, 0.11m minimum object distance, 1:2 magnification ratio, compact 220g design and quiet OSD autofocus, it provides photographers with a versatile tool for landscapes, architecture, travel, street photography and creative close-ups.
For Sony E-mount full-frame photographers looking for a lightweight 20mm F/2.8 lens with 1:2 close-focusing capability, the TAMRON F050 offers a unique way to explore ultra-wide photography.
