- Versatile wide-angle to standard-length zoom designed for full-frame Sony E-mount cameras that can also be used with APS-C models where it produces a 30-60mm equivalent focal length range.
- Constant f/2.8 maximum aperture provides bright illumination throughout the zoom range and also enables precise control over depth of field for working with selective focus techniques.
- VXD (Voice-coil eXtreme-torque Drive) linear motor focus mechanism for fast, quiet, and precise autofocus performance throughout the zoom range.
- Compatible with many camera-specific features and functions including Fast Hybrid AF and Eye AF.
- Minimum focusing distance of just 6.7" and a 1:3.8 maximum magnification for working with close-up subjects.
- Rapid zoom ring arc of 65° enables swift adjustment to the desired focal length with minimal movement.
- Moisture-resistant construction for use in inclement conditions, plus a fluorine coating on the front lens element to protect against dust, dirt, and smearing.
- Compatible with Tamron Lens Utility software for customizing lens functions and updating firmware.
The Professional's Source Since 1973
- E-Mount Lens/Full-Frame Format
- Maximum Aperture: f/2.8
- VXD Linear Motor Focus Mechanism
- Minimum Focusing Distance: 6.7"
Tamron 20-40mm f/2.8 DI III Overview
Tamron 20-40mm f/2.8 DI III Specs
|Focal Length||20 to 40mm|
|Minimum Aperture||Not Specified by Manufacturer|
|Lens Mount||Sony E|
|Lens Format Coverage||Full-Frame|
|Minimum Focus Distance||6.7" / 17 cm|
|Macro Reproduction Ratio||1:3.8|
|Filter Size||67 mm (Front)|
|Weight||12.9 oz / 365 g|
|Package Weight||1.5 lb|
|Box Dimensions (LxWxH)||6.8 x 5.5 x 5.3"|
Tamron 20-40mm f/2.8 DI III Reviews
I use it to shoot indoor event work especially hand held for parties where there isn't much room. Also a perfect lens for gimbal work, doesn't extend far and gives flexibility of a zoom instead of a prime. If you want to shoot interiors at 4k 60 most cameras crop 1.5 making the 20mm essential (30mm). Very light weight small and compact and a joy to use. Could see myself bringing this on vacation. AF is good. The optics probably aren't extraordinary but get the job done with 2.8 constant aperture is a big step up from a kit lens.
This is the lens you want!
Great focal length, great I Q, great size and weight. I'm surprised it took so long to have a lens with this coverage. For the price, you can't beat this option.
Great for what it is for
Compact size, lightweight, affordable. There is no real con for this lens if you know what you are getting. Sure I wish it goes to 50mm. I wish it is internal zoom. Overall great lens for gimbal video work. If one day someone come out a 20-50 f2.8 or something faster like 20-50 f2-2.8, I will definately upgrade.
Wonderful walk around lens
I had the Sony 40mm f/2.5 and used that as a light walk-around lens but found I often wanted wider - so I purchased this Tamron 20-40mm f/2.8 and found while it is a few ounces heavier and somewhat longer than the Sony, it is still very lights and compact and gives me the flexibility of going wider than 40mm. Sold the Sony and never looked back as to using the Tamron for easy street photography.
Works great with AF on Sony A7IV
I chose the 20-40mm Tamron lens as the full-frame next step up to be a companion to my current 11-20mm APS-C Tamron on my Sony a7IV for in-studio talking-head videos. With my range of 11-40mm now I have all the wide-angles covered. It is quite fast with the Sony AF, matches my current 67mm diam lens, and the light weight makes mounting variations easy. It was a good buying decision.
The perfect Gimbal Lens for Wedding Work
In my opinion this is the perfect lens for my Sony FX3 camera for wedding gimbal work. I was never a fan of the 16mm look so having 20 to 40mm is a game changer for me. Quality of this lens is good. If you are looking for a lens with some kind of character or look this is not the lens for you. The image is simple. AF is good enough for my work and the weight of the lens is perfect. Again for my kind of work I think this lens is perfect.
I really like this lens for its small size, very useful focal range and being f/2.8 The lens is very good optically, except for corner softness at the wide end, which mostly goes away by f/5.6. The focusing is fast and precise. The rings are butter smooth, which can be rotated with a little finger and the lens extends just 10mm or so. In that regard I didn't like the new Sony 20-70/4, because the zoom ring feels stiff, like plastic rubbing plastic with some stickiness at the wide end, and that lens also extending a lot. The tactile experience with Tamron is great. This lens despite such wide angle has pretty low distortions, you don't even need a software profile for it. Vignetting is somewhat heavy, but not difficult to correct. If you are shooting at 16:9 aspect ratio, those dark corners will be mostly cut off. Being f/2.8 means I can use this lens indoors in many situations and due to its size/weigh it can travel with me anywhere. If you like 20-40mm range this is a great lens to have. I also tested this lens on Megadap adapter on Nikon Z6ii. The bad part is that the mounting is very stiff, which is common for Tamron lenses. The good part, the lens works perfectly, and focusing is very quick and precise.
Simple and inexpensive moderate wide lens for travel.
This is a great and inexpensive lens for street and landscape photography. I own a full line of GM lenses, but for my light travels I'm using only SONY 24-105 G Lens and Tamron 20-40mm. This set covers 80% of my travel photo needs. In some trips, that don't require a lot of walking, I'm replacing 24-105mm with Tamron 35-180mm and that is my ideal travel set. Since I got the Tamron 20-40mm, it has become my must have lens when traveling.
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