Sony DT SAL1870 18-70mm

The Sony DT 18-70mm is a lightweight, versatile kit lens that handles everyday shooting fine but has real durability issues with its plastic mount. Macro performance is surprisingly good, ranking in the 97th percentile of our database, but sharpness falls off at 70mm and there's no stabilization. At $448 new, it's overpriced for a discontinued lens; look for a used copy under $100 if you're already on A-mount. Otherwise, put your money toward a system with a future.

Let's talk about what this lens does well first. The macro score lands in the 97th percentile of our database, which sounds impressive until you realize we're comparing it against every lens type out there, not just dedicated macro glass. Still, for a kit zoom, the close-up performance is genuinely useful. Minimum focus distance of 35mm means you can get surprisingly tight on flowers, food, or whatever small thing catches your eye. The aspherical element helps keep wide-angle shots from going mushy at the edges, and the ED glass does its job taming chromatic aberration at the telephoto end.

Sharpness is a mixed bag. At 18mm and mid-range focal lengths, it's perfectly fine for a lens in this class. But push it to 70mm and things get soft, especially wide open. You'll want to stop down to f/8 or so at the long end to get acceptable results. The autofocus sits right around the middle of the pack in our rankings, which matches what owners report: quick enough for general use, but not something you'd trust for fast-moving subjects. And there's no stabilization, so handheld shooting in low light means cranking ISO or accepting some blur. The aperture range is actually above average for this lens class, but that's damning with faint praise when you're starting at f/3.5.

Stacked against the Sigma 18-50mm f/2.8 DC DN, the Sony looks pretty rough. The Sigma gives you a constant f/2.8 aperture, modern optics, and a build quality that doesn't feel like it might snap at the mount. But the Sigma is a different mount system entirely, so if you're locked into Sony A-mount, that comparison is academic. The Tamron 28-300mm f/4-7.1 offers way more reach, but it's also bigger, heavier, and slower at the wide end. Different tools for different jobs.

The more relevant comparison is against other A-mount options. The Sony 18-250mm f/3.5-6.3 that one reviewer mentioned gives you significantly more zoom range for not much more money on the used market. If you're shooting wildlife or sports, that extra reach matters. But the 18-70mm is lighter and slightly faster at the wide end. For street photography and general walkaround use, the 18-70mm's compact size is genuinely nice. The Viltrox 13mm f/1.4 and Panasonic Leica 12-35mm are in completely different ecosystems, so they're not really competitors unless you're choosing a whole system from scratch.

Here's where things get tricky. The lens lists at $448 USD on Amazon, which is frankly absurd for a discontinued kit lens from 2006. You can find used copies for a fraction of that if you're patient, and that's really the only way this makes sense. The MXN 16,175 listing in Mexico is similarly overpriced for what you're getting. For context, you can buy a modern mirrorless kit lens with better optics and stabilization for less money in many cases.

The value proposition only works if you already own an A-mount body and need something cheap to get shooting. At the right used price, say under $100, this lens is a perfectly reasonable way to test out an old Sony DSLR. At $448, you're paying collector prices for a lens that was never meant to be collectible. The budget score of 68.2 in our database reflects this tension: the lens itself is fine for casual use, but the current asking prices don't match what you're getting.

The Sony DT 18-70mm f/3.5-5.6 is one of those lenses that quietly did its job for years without anyone making a fuss about it. It shipped as the kit lens for the Alpha DSLR-A100 back when Sony was still figuring out its DSLR identity, and it covers the classic 27-105mm equivalent range that handles most everyday shooting. You know the drill: snapshots, portraits, the occasional interior shot, maybe a flower close-up when you're feeling artsy. Nothing exotic, but that's kind of the point.

Who's this for? Someone who picked up an old Sony A-mount body for cheap and needs a lens that won't make their wallet cry. At 235g, it's light enough to forget you're carrying it. The f/3.5-5.6 aperture range is nothing to write home about, but for daylight shooting and casual use, it gets the job done. The DT designation means it's built specifically for APS-C sensors, so full-frame shooters should look elsewhere.

What makes this lens interesting in 2025 is the weird position it occupies. It's discontinued, so you're buying used or old stock. Prices are all over the place depending on where you look. And the user sentiment data we've collected tells a story of a lens that people genuinely like for what it is, but also one with some real durability concerns that keep popping up. More on that below.

Skip this lens if you're buying a new camera system. Sony A-mount is dead, and investing in glass for a discontinued mount means your lenses have no upgrade path. The durability issues with the plastic mount are also a dealbreaker for anyone who changes lenses frequently or shoots in rough conditions. If you need something tougher, look at the Sony 16-50mm f/2.8 SSM, which has a metal mount and better build quality throughout.

Also skip it if you shoot in low light regularly. The f/3.5-5.6 aperture combined with no stabilization means you'll be fighting blur constantly. A fast prime like the Sony 35mm f/1.8 DT would serve you much better for indoor and evening shooting, even though you lose the zoom flexibility.

If you already own a Sony A-mount DSLR and just need a lens to get started, the DT 18-70mm is a fine choice at the right price. It's light, the focal range is genuinely useful, and the image quality is good enough for casual shooting and social media. The macro capability is a nice bonus that most kit lenses don't offer. Just don't expect it to be a forever lens.

For anyone buying into a system from scratch, this lens shouldn't be the reason you choose Sony A-mount. The mount is dead, the lens is discontinued, and the durability concerns are real. Multiple owners report plastic mount failures, and one buyer went through two copies. If you're spending real money, look at a used Sony 16-50mm f/2.8 or jump to a modern mirrorless system where your lens investment has a future.