Sigma Contemporary 16-300mm f/3.5-6.7 DC OS

The Sigma 16-300mm f/3.5-6.7 DC OS is the ultimate one-lens solution for APS-C mirrorless, with mind-blowing range and class-leading stabilization - just don't expect it to shine in dim light.

The optical quality genuinely surprised us. Superzooms have a reputation for soft corners and chromatic aberrations, but Sigma's 4 aspherical and 5 ED elements deliver sharpness that sits in the 99th percentile of our database. Contrast is punchy and fringing is well controlled. The stabilization is borderline magical; handheld telephoto shots that should be a blurry mess come out crisp. Bokeh from the 9-blade diaphragm is decent, though you'll never confuse it with a fast prime. Autofocus is merely dependable—quick in good light but hunts a bit when things get dim, and the build quality (22nd percentile) feels a step down from Sigma's usual Contemporary fit and finish. It's weather-sealed, but the plastics have a budget vibe.

The Tamron 17-70mm f/2.8 Di III-A VC RXD is the obvious alternative. It gives you constant f/2.8 brightness across its whole range and a more robust build, but it stops at 70mm and can't touch the Sigma's macro tricks. You're trading 230mm of reach for two extra stops of light. If you shoot indoors or need shallow depth of field, go Tamron. Outdoors or while traveling, the Sigma's range is a game-changer. The Sigma Contemporary 18-50mm f/2.8 DC DN is the compact, bright option for Fuji X and L-mount shooters who want to stay light, but it gives up almost all of the reach and the macro capability. The Viltrox AF 35mm f/1.7 XF is a budget prime that crushes this lens in low light and bokeh, but it's a single focal length. And the Panasonic Leica DG Vario-Elmarit H-ES12035 is a sharp, weather-sealed standard zoom for Micro Four Thirds, but it's a different mount and a much shorter range.

At Newegg's $694 low end, you're getting a lens that can genuinely replace a bag of primes and zooms. That's solid value for the convenience, especially if you can find it on sale. But if you're staring down the $956 top price, you might start thinking about a used Tamron 17-70mm f/2.8 and a separate telephoto. As a one-lens solution, it's undeniably useful; just don't overpay for the novelty.

The Sigma 16-300mm f/3.5-6.7 DC OS is the lens equivalent of a Swiss Army knife with a telephoto attachment. Its 18.8x zoom range stretches from a genuinely wide 16mm to a 300mm that brings distant subjects uncomfortably close, all while packing optical stabilization good for 6 stops and a macro mode that gets you to 1:2 magnification. If you shoot L-mount or Fuji X and hate swapping glass, this is a dream come true.

But the aperture story is a compromise you can't ignore. At f/3.5 on the wide end it's bright enough, but by the time you hit 300mm you're stuck at f/6.7. Low light and fast action are going to need some ISO gymnastics. And at nearly 1.2kg, it's a chunky companion for a mirrorless setup. Still, for sheer versatility, nothing else comes close right now.

If you shoot a lot of indoor events or dream of creamy bokeh, this lens isn't for you. The slow aperture will fight you every step. Pick up a Tamron 17-70mm f/2.8 instead. You'll lose the crazy reach, but you'll gain two stops of light and better build quality. And if you already own a standard zoom and a telephoto, this superzoom might just collect dust.

If you want one lens to glue to your L-mount or Fuji X camera and call it a day, the Sigma 16-300mm is the one. It's sharp, stabilized like a gimbal, and covers every focal length you'll realistically need. Just accept that you'll be cranking ISO when the sun goes down, and maybe keep a small prime in your bag for date nights. For travel, hiking, and all-around outdoor shooting, this lens earns an enthusiastic recommendation.