![]() ![]() At wide-angle, the minimum focusing distance is as little as 19cm (7.5"), yielding a maximum magnification of 0.21x (1:4.8). Yet despite that choice, AF performance is nevertheless very impressive, with even significant shifts in focusing distance taking just a fraction of a second on our Sony a7R IV body.Īnd while this is by no means a macro lens, it can still focus fairly close. The Tamron 17-70mm F2.8 foregoes the fancy linear motors typical of higher-end lenses, opting instead for a stepper motor-based autofocus drive. An internal focusing design means that focus adjustments won't change the lens barrel's length or cause filters to rotate, although turning the zoom ring will cause the barrel to extend or retract to match. The manual focus ring has relatively little damping and so feels very light in use, but that's pretty typical of lenses in this category. The zoom ring is very smooth and well-balanced. The good news is that Tamron's vibration compensation is generally really solid, and functions well in combination with in-body stabilization if supported by your camera body. We found that to be a somewhat perplexing omission with no dedicated controls for focus mode or vibration control, owners of the Tamron 17-70mm F2.8 will have to spend more time in their camera's menu system than would otherwise be the case. Up front there's a 67mm filter thread, a size that's also common on many of the company's other lenses.Ībsent from the lens, though, are any buttons. At 524g (18.5oz), it's very lightweight, but build quality is nevertheless pretty good.Ī pair of rings encircle the lens barrel, with the smaller of these near its tapered base controlling manual focus, and the larger one adjusting the focal length. The 17-70mm F2.8 is pretty typical of Tamron's modern product line. Sharpening and noise reduction at ACR defaults. Let's take a look at what the Tamron 17-70m F2.8 can do and what it's like to use.Īll sample images edited in Adobe Camera Raw 13 with adjustments limited to white balance, exposure, highlights, shadows, white and black levels. It's both the company's first F2.8 zoom for sub-frame mirrorless cameras, and the industry's first to achieve a 4.1x zoom ratio, so we were keen to try it in the real world.įor our review, DPReview TV host Chris Niccolls took it on a road trip to the Calgary Zoo and the nearby town of Okotoks, Alberta, while editor Dan Bracaglia gave it a whirl closer to home around DPReview's headquarters in Seattle. Tamron launched the 17-70mm F2.8 Di III-A VC RXD in late 2020. ISO 100 | 1/30 sec | F8 |34mm equiv.| Sony a7R IV (in APS-C crop mode) With a generous zoom range and good detail out to the corners, the Tamron 17-70mm F2.8 makes a great travel-zoom lens. Optical construction: 16 elements in 12 groups. ![]() ![]() Maximum magnification: 0.21x (wide) / 0.19x tele.Stabilization: Yes, Tamron Vibration Compensation.Focal length: 17-70mm (25.5-105mm full-frame equivalent).Handling | Autofocus | Image quality | Conclusion | Samples | Full specifications It's available now at a price of $799.99 USD. It also shows potential as a video lens thanks to its vibration control and lack of focus breathing. With a constant F2.8 maximum aperture across its zoom range, the Tamron 17-70mm makes a great travel lens for photographers on a budget. We tried both approaches for this review, pairing it with the Sony a6600 as well as the Sony a7R IV in APS-C crop mode. Think of it as roughly equivalent to a 24-105mm F4 lens on a full-frame camera, but scaled down to match the APS-C sensor format.Īlthough it's designed for cameras with APS-C sensors, it can still be used with full-frame models when cropped to APS-C. The Tamron 17-70 F2.8 Di III-A VC RXD is a compact general-purpose lens for Sony's APS-C, E-mount mirrorless cameras. ![]()
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