![]() ![]() The zoom ring travels in an arc that’s only 65° so you can go from 20mm to 40mm in a flash. Focus and zoom rings turn smoothly and with authority. Think of it as a frog’s transparent eyelid.Įxcellent tactile feedback is the beginning. It sheds water and oil, resists fingerprints and is easier (and safer) to clean when necessary. The front element is protected with a thin coating of a Fluorine compound which is oleophobic. Also, the Connector Port is the water-proofed USB Type-C type. It’s reassuring to know that like most other Tamron lenses, the 20-40mm f/2.8 has weather-resistant seals at key points of potential ingress. I’m a big proponent of protecting camera gear from the deleterious effects of weather at all costs, which I why I pack a 30-gallon Hefty trash bags on cloudy days. Weather Protection for Outdoor Safeguards And no lenses sitting precariously in your bag without the protective cap in place. Tamron has standardized on 67mm filter size for nearly all of their mirrorless lenses, allowing you use the same filters throughout your kit.Īnd the following benefit may seem like a small deal, but when you swap lenses and recap the lens you just removed, it’s fast and efficient if all of the front lens caps are the same size. If you spend $60-$100 or more on a thin, high-quality circular polarizer, and nearly as much on a couple ND filters, it would be great if you could use them on more than one lens. Uniform 67mm Filter Size for Ease and Economy Delivering high-speed, high-precision AF, excellent focus tracking performance and zero back-and-forth focus seeking, the Tamron 20-40mm f/2.8 is perfect for video and well as digital stills. In the field, by using the Mobile version of the app, users can select Focus Preset and A-B Focus, and those functions can be performed remotely without touching the lens.Īutofocus Design For Speed and Quiet VideoĮquipped with Tamron’s VXD (Voice-coil eXtreme-torque Drive) linear motor focus mechanism, AF operations are fast and quiet. Simply connect the lens to a computer via a suitable USB-C cable and run the app. The Tamron 20-40mm f/2.8 zoom features a Connector Port, a USB-C port that allows users to customize certain focus ring settings and update to the latest firmware when necessary. Update and Customize via Tamron Lens Utility App Sony Alpha cameras famously include lens-correction firmware, and the Tamron 20-40 takes advantage of the countermeasures for shading, chromatic aberration and distortion that’re built into Sony bodies, and uses the Fast Hybrid AF, Eye AF and Direct Manual Focus (DMF) features that are likewise baked into most Sony Alpha mirrorless models. Last but not least, the fast f/2.8 aperture, combined with Sony’s superior high-ISO performance, means that low light levels are no longer an issue. I tend to shoot a lot of close-ups, equipment permitting, and have been known to shoot my food at every opportunity. At 40mm she focuses to a respectable 11.4 inches and provides a 1.5X magnification ratio. At 20mm the zoom focuses as close as 6.7 inches (measured from sensor plane, so the front of the lens is just three inches or so from the subject). The added benefit of including the 24mm, 35mm and 40mm focal lengths that define my mental compositional presets was icing on the proverbial cupcake.īut what really won my heart and made me realize that I had found my new everyday lens is the close-focusing capability. The lens is smaller than 3.5 x 3 inches (actual specs 3.4 x 2.9, L x D) and is not much larger than the 20mm f2.8 lens I frequently use (review here) on my Sony Alpha mirrorless camera. When the sample arrived, I couldn’t believe a 20-40mm f/2.8 could be inside such a small box. The fast-focusing AF motor is quiet and smooth, so video makers can use it without fear of an intrusive grinding soundtrack. ![]() The 40mm top-end is close to the mathematical “normal” for full-frame and 35mm film cameras, which is 43.266mm (although we’ve been calling 50mm “normal” for decades). Starting at the ultra-wide 20mm setting, the lens provides excellent coverage for indoor groups and family events, travel photography and many other situations, and performs very well in low light thanks to the fast f/2.8 aperture. ![]() This is a review of the Tamron 20-40mm f/2.8 Di III VXD, a fast, compact zoom that I suspect many full-frame Sony mirrorless camera shooters will want to use as their everyday lens. It’s a new kind of “everyday zoom” that exemplifies versatility and speed. It focuses to 6.7 inches and covers the focal lengths street photographers, travelers, video content creators and landscape shooters want most. The Tamron 20-40mm f/2.8 is extra-compact (3.4 inches long) and super-sharp. ![]()
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