Tamron 11-20mm F2.8 Di III-A is a Fixed aperture Auto Focus (AF)
Ultra-Wideangle Zoom lens with APS-C / DX max sensor coverage, and it is designed to be used with
E Mount cameras.
What type of photography is the Tamron 11-20mm F2.8 Di III-A lens good for?
The type of photography that you are planning to use the Tamron 11-20mm F2.8 Di III-A is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Reasons to Buy Tamron 11-20mm F2.8 Di III-A RXD Lens
Here we've included a summary of the advantages and disadvantages of the Tamron 11-20mm F2.8 Di III-A RXD lens in a list form to help you determine whether it offers the features you need.
| Weather-sealed |
| Autofocus |
| Hood supplied |
| Fast Aperture at Wide end |
| Fast Aperture at Tele end |
| Constant f2.8 aperture throughout the range |
| Extreme Wide-angle capability |
| Minimum focus distance of 0.15m / 5.9 inch |
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| Lens Extents while zooming |
Lens Mount
Tamron 11-20mm F2.8 Di III-A is compatible with cameras that have a Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A6700, Sony FX30 and Sony ZV-E10.
![https://cameradecision.com/lenses/img/other/Tamron-11-20mm-F2.8-Di-III-A-RXD-FE-Mount-bottomview.jpg]()
Tamron 11-20mm F2.8 Di III-A Sony E Lens Mount
Tamron 11-20mm F2.8 Di III-A is also available in Fujifilm X mount.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Tamron 11-20mm F2.8 Di III-A has a maximum diameter of 73mm and total length of 86mm. It weighs 335g / 11.8 oz.
Below you can find a scaled side-by-side image of Tamron 11-20mm F2.8 Di III-A and Sony E 10-20mm F4 PZ G (Sony E mount) to get a better idea of how their sizes compare in real life. Check the detailed comparison of these two lenses here.
Comparison image of the Tamron 11-20mm F2.8 Di III-A and the Sony E 10-20mm F4 PZ G Size and Weight
Tamron 11-20mm F2.8 Di III-A has a filter thread of 67mm. Below are links to the filters that we recommend you to consider for your Tamron 11-20mm F2.8 Di III-A:
![https://cameradecision.com/lenses/img/other/Tamron-11-20mm-F2.8-Di-III-A-RXD-FE-Mount-topview.jpg]()
Tamron 11-20mm F2.8 Di III-A Lens Top View
Focal Range
Tamron 11-20mm F2.8 Di III-A has a focal range of 11-20mm and 1.8X zoom ratio which has a 35mm equivalent focal range of 16.5-30mm when used on a APS-C / DX format camera.
Weather Sealings
![https://cameradecision.com/lenses/img/other/Tamron-11-20mm-F2.8-Di-III-A-RXD-FE-Mount-sealing.jpg]()
Weather Sealings of the Tamron 11-20mm F2.8 Di III-A
The Tamron 11-20mm F2.8 Di III-A is a weather-sealed lens, which provides extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have effective protection, you have to pair the Tamron 11-20mm F2.8 Di III-A with a weather-sealed camera body such as the Sony A6700, Sony FX30 and Sony A6600.
Optical Image Stabilization
Tamron 11-20mm F2.8 Di III-A doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Alternatively, you can check the Sony E 10-18mm F4 OSS. in Sony E mount that have similar focal range but features Optical Image Stabilization.
Lenses Similar to Tamron 11-20mm F2.8 Di III-A With Optical Image Stabilization
Maximum Magnification Ratio
Tamron 11-20mm F2.8 Di III-A has a Max Magnification Ratio of 0.25x and has a minimum focusing distance of 0.15m. For a non-macro lens, the 0.25x is considered a high magnification and will come handy for close-up shots.
Below are the 3 Ultra-Wideangle Zoom type Sony E mount lens alternatives with highest max magnification ratios:
Aperture
Tamron 11-20mm F2.8 Di III-A is a fixed aperture lens with a constant max aperture of f2.8 from 11mm all the way to the 20mm .
| Focal Length |
Max Aperture |
Min Aperture |
|
11mm
|
F2.8 |
F16 |
|
20mm
|
F2.8 |
F16 |
Optical Formula
Tamron 11-20mm F2.8 Di III-A's optical formula consists of 12 elements in 10 groups . Following special elements are used in this design:
- 2 aspherical
- 1 XLD
- 2 LD elements
- BBAR-G2 coating
![https://cameradecision.com/lenses/img/other/Tamron-11-20mm-F2.8-Di-III-A-RXD-FE-Mount-optical-structure.jpg]()
Optical Construction of the Tamron 11-20mm F2.8 Di III-A
Lens Hood
Tamron 11-20mm F2.8 Di III-A comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
![https://cameradecision.com/lenses/img/other/Tamron-11-20mm-F2.8-Di-III-A-RXD-FE-Mount-hood.jpg]()
Tamron 11-20mm F2.8 Di III-A Lens Hood
Body Colour
Tamron 11-20mm F2.8 Di III-A is available in Black color.
Popular Comparisons of Tamron 11-20mm F2.8 Di III-A
Here are the eight most popular comparisons of the Tamron 11-20mm F2.8 Di III-A amongst Camera Decision readers.
Top Alternatives of Tamron 11-20mm F2.8 Di III-A Lens
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