Sigma Contemporary 20-200mm f/3.5-6.3 DG 200mm

The Sigma 20-200mm f/3.5-6.3 DG is a genuinely useful all-in-one zoom with strong optics and excellent bokeh, but the variable aperture and lack of stabilization hold it back from being a true workhorse lens. Buy it at the right price ($999) if you prioritize convenience over capability.

Image quality is a genuine bright spot here. The 18-element optical formula delivers sharp, contrasty images that hold up well even at the edges of the frame. Bokeh is one of the best we've seen in this class (84th percentile), and the 1:2 macro ratio lets you get surprisingly close for a telephoto zoom. The HLA motor is fast and nearly silent, though it sits at just 54th percentile for autofocus speed, so don't expect Sony GM-level tracking for sports. The lack of stabilization is a real miss, especially at 200mm where camera shake becomes a serious concern. You'll need a camera with in-body stabilization to get the most out of this lens in handheld situations.

The Tamron 17-70mm f/2.8 Di III-A VC RXD offers a constant f/2.8 aperture and built-in stabilization for roughly similar money, though it tops out at 70mm. The Nikon Z 17-28mm f/2.8 and Canon RF 28-70mm f/2.8 IS STM are faster constant-aperture options but cover much narrower ranges. The Panasonic Leica 12-35mm sits in the middle for versatility. If you need maximum reach in a single lens, the Sigma wins. If you need faster apertures or stabilization, look elsewhere.

Prices range from $999 to $1401 across vendors, which is a $402 spread that you should definitely pay attention to. At the low end, this is a fair deal for the convenience factor alone. At the high end, you're approaching lenses with constant f/2.8 apertures and built-in stabilization. The real value proposition is avoiding the cost and hassle of carrying multiple primes or zooms, but if your budget stretches to $1400, you might want to consider what else that money could buy you.

The Sigma 20-200mm f/3.5-6.3 DG Contemporary is a true all-in-one zoom that covers everything from 20mm wide-angle to 200mm telephoto without swapping glass. At 544g, it's surprisingly portable for the range it covers, and the HLA autofocus motor delivers quick, quiet focusing. The optics are solid across the board, with strong bokeh performance and decent macro capabilities. But that variable aperture (f/3.5-6.3) means you're giving up low-light performance and shallow depth of field compared to constant-aperture lenses, and there's no built-in stabilization to compensate.

If you need stabilization, fast apertures, or the best autofocus tracking, skip this lens. The Tamron 17-70mm f/2.8 with VC stabilization is a better choice for similar money, and sports or wildlife shooters will want something with faster, more reliable AF. This isn't a professional workhorse, no matter how you slice it.

This lens is for the traveler, hiker, or casual shooter who wants one lens that does almost everything. The 20-200mm range is genuinely versatile, and the image quality holds up well. But if you shoot in low light often, need stabilization, or want faster autofocus tracking, you'll feel the compromises. At its best price ($999), it's worth considering. At $1401, you're paying for convenience more than performance.