AFK9B0

The Sigma Art 135mm f/1.4 DG Art is a premium portrait prime with exceptional bokeh and top-tier autofocus. It's heavy and specialized, but for subject isolation and background blur, it's among the best lenses we've tested. Buy it for portraits, skip it for travel or general use.

Autofocus is where this lens flexes hardest. The linear HLA motor lands in the 98th percentile for AF speed and accuracy among all lenses we track. That's the absolute best right now, or close enough that you won't notice the difference. Eye tracking on modern mirrorless bodies feels instant, and it keeps up with moving subjects better than most primes in this focal range.

Optically, the 135mm f/1.4 sits in the 86th percentile overall, which is strong but not the very top of the charts. The aperture itself ranks in the 97th percentile, and bokeh quality matches that at 97th. Wide open, backgrounds dissolve into smooth, circular highlights thanks to the 9-blade diaphragm. Sharpness across the frame is excellent, though you'll want to stop down slightly if you're shooting flat test charts for fun. Stabilization is built in and lands well above average, which helps when you're handholding a 1097g lens at slower shutter speeds. Macro performance is mediocre at 47th percentile, so don't expect close-up work from this one. Minimum focus distance is 875mm, which is fine for headshots but not for detail shots of small subjects.

Compared to the Tamron Di III VC 28-300mm f/4-7.1, the Sigma is a completely different animal. The Tamron is a do-everything travel zoom with a slow variable aperture, while the Sigma is a fixed 135mm with an f/1.4 aperture that lets in roughly 8 times more light at the wide end. If you want one lens for vacation snapshots, get the Tamron. If you want a portrait machine, the Sigma wins without breaking a sweat.

The Viltrox AF 13mm F1.4 and 7Artisans LITE AF35mm F1.8 are both much cheaper primes aimed at different use cases. The Viltrox is an ultra-wide for landscapes and vlogging, and the 7Artisans is a budget 35mm for everyday shooting. Neither competes with the Sigma on bokeh or subject isolation. The Sony E 18-135mm f/3.5-5.6 OSS is a solid all-rounder zoom, but it can't touch the Sigma's aperture or background blur. The Nikon NIKKOR 2178 is another budget option that trades optical ambition for portability. None of these alternatives come close to the Sigma's 97th percentile bokeh and aperture performance.

Pricing on this lens is all over the map depending on where you shop. In the US, we're seeing listings from USD 226 to USD 1,899 across 3 vendors, which is a massive spread. The low end looks like a bundle or open-box situation, while the high end is full retail with accessories. In Europe, prices are much tighter at EUR 191 to EUR 222 across 4 listings in Germany, Spain, France, and Italy. If you're buying in euros, the gap between vendors is small enough that shipping speed and warranty matter more than the price difference. For US buyers, the best deal in our data comes from Newegg, where the lens is listed at the lower end of that range with a bundle that includes a soft case, lens cap tether, and cleaning kit. Just make sure you're looking at the right mount version before you click buy.

The Sigma Art 135mm f/1.4 DG Art is a medium telephoto prime lens built for one thing: making portraits look absolutely stunning. It sits in the premium tier of Sigma's Art lineup, and the f/1.4 aperture puts it among the fastest 135mm lenses you can buy. If you're searching for a lens that melts backgrounds into creamy oblivion while keeping your subject razor sharp, this is the kind of glass that shows up on your shortlist.

We're looking at 13 elements in 10 groups, including 2 aspherical and 4 ED elements, all wrapped in a weather-sealed body. It's not small or light at 1097g, but that's the trade-off for this level of optical ambition. The L-Mount version covers full-frame sensors, and Sigma's Super Multi-Layer Coating helps keep contrast and color honest even in tricky light.

People often ask whether a 135mm f/1.4 is worth the bulk and cost compared to an 85mm or a 70-200mm zoom. The short answer: if bokeh quality and subject isolation are your top priorities, very few lenses in our database touch this thing. It's a specialist, not a generalist, and it knows exactly what it's good at.

Skip this lens if you shoot travel, street, or everyday family photos. The 47.8/100 travel score tells the story: it's heavy, long, and not versatile. At 1097g, it'll weigh down your bag and your wrist. If you want a single lens that does a bit of everything, look at a 24-70mm f/2.8 or a 70-200mm f/2.8 zoom instead. Macro shooters should also look elsewhere, since the 47th percentile macro performance and 875mm minimum focus distance make close-up work frustrating. And if you're on a tight budget, the 7Artisans LITE AF35mm F1.8 or a used 85mm f/1.8 will get you 80% of the portrait magic for a fraction of the price.

Should you buy the Sigma Art 135mm f/1.4 DG Art? If you shoot portraits, weddings, or fashion and you want the kind of background separation that makes clients gasp, yes. This lens delivers bokeh that ranks in the top 3% of everything we've tested, and the autofocus is fast enough to keep up with real-world shooting, not just spec sheets.

But be honest with yourself about what you need. This is not a travel lens, not a walkaround lens, and not a budget pick. It's heavy, it's specialized, and it's not cheap at full retail. If you're a hobbyist who shoots a bit of everything, you'll probably be happier with a good 85mm or a 70-200mm zoom. If you're a portrait specialist who lives at f/1.4, this is one of the best tools you can put in your bag.