The Viltrox AF 135mm F1.8 FE Lab lens combines a sturdy build with fast focus and background-blurring optics, but its questionable ergonomics, tendency to flare, and faulty firmware are tough to overcome.

The Pocket Dispo brings '90s-style disposable camera optics to digital systems for less than the price of a spare camera battery.

The Nikkor Z 600mm F6.3 VR S is a big telephoto lens you won't mind carrying thanks to its featherweight optical elements.

The Viltrox AF 28mm F4.5 FE is the smallest full-frame lens with autofocus we've tested, but expect some handling frustrations as a trade-off for its tiny size and rock-bottom price.

Learn about the speed, image quality, and general performance tests we run on every digital camera and lens we review.

The RF 28-70mm F2.8 Lens is the perfect alternative to pricier L series glass.

The Sigma 28-105mm F2.8 DG DN Art doesn't go as wide as lighter alternatives, but its background-blurring optical formula and mid-telephoto reach make it a standout lens for event coverage.

With superb optical performance, a background-blurring f-stop, and lightning-fast focus, the FE 85mm F1.4 GM II is the premiere short tele lens for portraiture and bokeh on Sony's mirrorless system.

With excellent construction quality and sharp optics, the Viltrox AF 27mm F1.2 Pro brings the full-frame bokeh look to APS-C cameras.

The svelte E PZ 16-50mm F3.5-5.6 OSS II lens gets an autofocus upgrade, but Sony's most affordable zoom still has plenty of room for improvement.

The Nikon Nikkor Z 28-400mm F4-8 VR travel zoom is wide enough for landscapes and long enough for wildlife, though its optical formula limits low-light photo ops.

An especially good purchase in a kit, the Fujifilm Fujinon XF 16-50mm F2.8-4.8 R LM WR has better build quality and optics than most starter zooms.

The affordable Tamron 50-300mm F4.5-6.3 Di III VC VXD lens goes wider than most alternatives and won't weigh you down, though a few optical flaws limit its appeal.

If you've outgrown the kit lens that came with your camera, it can be difficult to decide what to get next. We walk you through everything you need to know before your purchase.

The Sigma 28-45mm F1.8 DG DN Art's exceptionally bright aperture and impeccable picture quality make it a viable replacement for moderately wide to standard prime lenses.

The TTArtisan 28mm F5.6 has appeal for Leica owners who want a lens that not only looks like a mid-century optic, but renders images like one, too.

The pricey Sigma 15mm F1.4 DG DN Diagonal Fisheye Art lens captures the world with an especially wide perspective and features extra-bright optics for night sky photography.