Samyang ED UMC 135mm f/2.0

The Samyang 135mm f/2.0 ED UMC delivers exceptional sharpness and beautiful bokeh at a price that undercuts the competition by a wide margin. Owners rate it 4.5 out of 5 stars, and our sentiment analysis gives it an 85/100. But it's manual focus only, has no weather sealing, and weighs 816g, so it's not for everyone.

Let's talk about what this lens does well first. The sharpness is the star of the show. Owners consistently describe it as exceptional, and the sentiment data shows image quality as the top positive theme with roughly 12 mentions. At f/2.0, the depth of field is razor thin, and when you nail focus, the detail is stunning. The single ED element does real work keeping chromatic aberration low, which matters a lot on a fast telephoto like this. Our optical score of 59th percentile reflects a lens that's above average but not chart-topping, which feels about right when you consider the price point.

The aperture story is more complicated. An f/2.0 maximum aperture on a 135mm lens is genuinely useful for low light and subject isolation. But our database ranks the aperture at just the 21st percentile for this lens type. That's because modern zooms and primes in this category often go faster or offer more flexibility. The minimum aperture of f/22 is fine for landscape work, but you won't be doing any serious macro with a minimum focus distance of 800mm. The macro score of 47th percentile confirms this is not a close-up lens. And the stabilization score of 35th percentile is a real limitation. No optical stabilization means you need steady hands or a tripod, especially at 135mm where camera shake is magnified.

Stacked against the competition, the Samyang occupies a weird and wonderful niche. The Tamron Di III VC 28-300mm f/4-7.1 Di III VC VXD gives you autofocus, stabilization, and a massive zoom range, but you're stuck at f/4 at the wide end and f/7.1 at 300mm. The Sigma Contemporary 18-50mm f/2.8 DC DN is sharp and compact, but it's an APS-C lens with a much shorter reach. The Sony E 18-135mm f/3.5-5.6 OSS offers stabilization and autofocus, but again, you're losing two stops of light compared to the Samyang's f/2.0. None of these zooms can touch the Samyang for subject isolation or low light work at 135mm. The trade-off is that every single one of them has autofocus, and the Samyang doesn't. If you need to track moving subjects, this lens will frustrate you. If you're shooting portraits, astro, or anything where you control the pace, the Samyang wins on pure image quality per dollar.

Here's where the Samyang 135mm f/2.0 gets interesting. In the US, prices range from USD 389 to USD 438 across four listings. That's a USD 49 spread, which is worth shopping around for. The lowest price we're seeing is USD 389, and at that number, this lens is a steal for the image quality it delivers. Canadian buyers face a wider gap, with prices running from CAD 534 to CAD 715, a CAD 181 difference. The CAD 534 listing is the obvious pick if you're north of the border. The value proposition is straightforward: you're getting sharpness and bokeh that owners repeatedly compare to lenses costing two or three times more, but you're paying for it with manual focus and no weather sealing. For a portrait or astro shooter on a budget, that trade is almost always worth it.

The Samyang 135mm f/2.0 ED UMC is a manual focus prime that owners rate at 4.5 out of 5 stars across 231 reviews, and our user sentiment analysis backs that up with an 85/100 score. That's a strong social proof ranking too, sitting at the 80th percentile for this lens type. The headline here is simple: this lens delivers image quality that people repeatedly say rivals glass costing two or three times as much. But you're trading away autofocus, weather sealing, and any electronic communication with your camera to get it.

At 816g with an all-metal build, this is a chunky piece of kit. The optical formula packs 11 elements in 7 groups, including one ED element and Samyang's Ultra Multi-Coating. The 9-blade diaphragm promises round bokeh highlights, and the f/2.0 maximum aperture lets in a lot of light for a 135mm. But our database tells a more nuanced story. The optical score lands at the 59th percentile, which is solid but not spectacular. The bokeh score is a disappointing 24th percentile, which is surprising given how much owners rave about the out-of-focus rendering. More on that mismatch below.

Skip this lens if you need autofocus, period. The 15th percentile autofocus ranking isn't a minor inconvenience, it's a fundamental limitation. If you shoot sports, wildlife, or anything with moving subjects, the manual focus will cost you shots. The wildlife and sports score of 19.3/100 is the weakest area in our entire analysis. Also skip it if you shoot in wet or dusty conditions, since there's no weather sealing. And if you're bothered by heavy gear, the 816g weight will wear on you during long sessions. This is a lens for patient, deliberate shooters who value image quality over convenience.

The Samyang 135mm f/2.0 ED UMC is a specialist's lens, and it knows exactly who it's for. The 4.5/5 rating from 231 reviews and the 85/100 sentiment score tell you that the people who buy this lens love it. The sharpness is genuinely exceptional, the bokeh is lovely despite what our database's 24th percentile bokeh score suggests, and the value is hard to beat at USD 389. But the manual focus only design, ranked 15th percentile for autofocus, is a dealbreaker for a lot of shooters. The lack of weather sealing and the 816g weight add friction too. If you're willing to slow down, focus carefully, and work around the limitations, this lens rewards you with images that look like they came from glass costing far more. If you need speed and convenience, look elsewhere.