Tamron Tamron Di III Tamron 18-300mm f/3.5-6.3 Di III-A VC VXD Lens Review

The Tamron 18-300mm is trying to be your only lens. It's a superzoom for Sony APS-C cameras, covering everything from a wide 27mm equivalent to a super-telephoto 450mm. That's a huge range in one package.

It's got a linear autofocus motor for speed and solid image stabilization. But to get that zoom range, you give up some light. The aperture starts at f/3.5 and drops to f/6.3 at the long end, so it's not a low-light champ.

Image quality is actually pretty sharp, landing in the 90th percentile for optics. The stabilization is also top-tier at the 89th percentile, which helps a ton at 300mm. The macro performance is a nice surprise, letting you get close at 1:2 magnification. But the autofocus is just average, sitting in the 47th percentile, and the variable aperture means you lose light fast as you zoom in.

At $699, it's not cheap. You're paying for convenience. If you hate swapping lenses and want one do-it-all option for travel or casual shooting, the price might be worth it. But if you care about low-light performance or ultimate image quality, you could get two or three sharper, faster primes for the same money.

Don't compare this to primes like the Viltrox 35mm f/1.7. That lens is tiny, super fast for low light, and way cheaper, but it only does one focal length. The Tamron does everything, just slower. Against something like the Sony 18-135mm, you're getting way more reach here, but the Sony might be sharper in the middle of its range. This lens is for the 'one and done' crowd who value range over speed.

Buy this if you're a Sony APS-C shooter who wants a single lens for everything from landscapes to wildlife and you're okay with the variable aperture. Skip it if you shoot in low light often, need weather sealing, or prefer the better image quality of a set of primes.