Samyang Prima Series IO8518-E 85mm

The Samyang Prima Series IO8518-E is a lightweight, weather-sealed 85mm f/1.8 prime for Sony E-mount with fast, quiet autofocus. It's a great value at the low end of its price range, though bokeh quality is below average for an 85mm. Best for street, travel, and video shooters who prioritize size and speed over creamy background blur.

Autofocus is a genuine strength here. The linear stepping motor is quick and nearly silent, which puts this lens in the top 15% of our database for AF performance. On a Sony body with good phase detection, it locks on fast and doesn't hunt much in decent light. For video shooters, the lack of focus noise is a real plus, and focus transitions are smooth rather than jerky.

Optically, it's a middle-of-the-pack performer at the 69th percentile. Sharpness is good in the center wide open and improves stopped down, but corners lag a bit at f/1.8. The 9-blade diaphragm helps keep out-of-focus highlights rounder than cheaper 7-blade designs, but bokeh quality lands in the bottom quarter of our database. It's not ugly, just not as creamy as pricier 85mm options. Minimum focus distance is 800mm, which is typical for this focal length, and max magnification of 1:8.33 means you won't be doing any close-up work. There's no optical stabilization, which puts it in the bottom third for that metric, so keep your shutter speeds up or rely on IBIS if your Sony body has it.

The obvious comparison is the Sony FE 85mm f/1.8, which costs more but delivers better bokeh and slightly better corner performance. The Sony also has a more premium build feel, though it's heavier. If you're on a budget, the Samyang gets you 90% of the way there for a lot less money, especially if you catch it at the low end of that price range.

Against the Viltrox AF 85mm f/1.8, the Samyang is lighter and has better weather sealing, but the Viltrox tends to have nicer bokeh rendering. The Sigma 85mm f/1.4 DG DN is in a completely different class for image quality, but it's also much bigger, heavier, and more expensive. For most people who want an 85mm for occasional portraits and general shooting, the Samyang's size and price make it the practical choice, even if it doesn't win any optical beauty contests.

Pricing is all over the place depending on where you shop. In the US, we're seeing listings from USD 215 to USD 399 across 8 vendors, which is a huge spread for the same lens. The lowest price we found is USD 215, and at that number this lens is an absolute steal. In Canada, prices range from CAD 464 to CAD 584, with the best deal at CAD 464. European buyers are looking at EUR 405 to EUR 455. If you're paying the top end of any of those ranges, the value proposition weakens considerably, because you're getting close to used Sony FE 85mm f/1.8 territory. Shop around before you buy, and don't pay full retail when the spread is this wide.

The Samyang Prima Series IO8518-E is an 85mm f/1.8 prime lens for Sony E-mount, and it's one of the lightest full-frame portrait lenses you can buy at 272g. It sits in that budget-to-midrange space where Samyang and Rokinon have been quietly undercutting the big brands for years. You get weather sealing, a linear stepping motor for autofocus, and a 9-blade diaphragm, all wrapped in a matte finish with a textured rubber grip.

If you're searching for an affordable 85mm lens for Sony full-frame cameras, this one answers a lot of questions right away. Is it good for portraits? Yes, mostly, though our scoring says street and professional use edge it out slightly. Is it good for video? The silent linear STM autofocus makes it a solid pick for run-and-gun shooting. The f/1.8 max aperture gives you real subject separation without the size or price penalty of an f/1.4.

One thing to know up front: this lens is sold under both Samyang and Rokinon branding, and the specs are identical. The optical formula uses 9 elements in 8 groups, with 3 aspherical elements and 1 ED element. UMC coating helps with flare and contrast. It's a simple, focused design that doesn't try to do everything, and that's kind of the point.

Skip this lens if you're a dedicated portrait photographer who lives and dies by bokeh quality. The background rendering is the weakest part of this lens, and that's a dealbreaker for that use case. Also skip it if you shoot a lot of handheld video without a stabilized body, since there's no optical stabilization and the 85mm focal length amplifies camera shake. Macro shooters should look elsewhere too, the 1:8.33 max magnification is nowhere near close-up territory. If any of those describe you, the Sony FE 85mm f/1.8, Viltrox AF 85mm f/1.8, or a dedicated macro lens would serve you better.

Should you buy the Samyang Prima Series IO8518-E? If you want a lightweight, weather-sealed 85mm for Sony E-mount and you don't want to spend Sony money, yes. The autofocus is genuinely good, the build quality is better than the price suggests, and the size makes it a lens you'll actually carry around. It's a great option for street photography, travel, and video work where a big heavy lens would slow you down.

But if your primary goal is creamy, dreamy portrait bokeh, this isn't the lens for you. The bokeh quality is the weakest part of the package, and that's a problem for a focal length that's traditionally all about subject isolation. You'd be better off saving for the Sony FE 85mm f/1.8 or looking at the Viltrox. For everyone else, especially at the low end of the price range, this is one of the best value 85mm lenses on the market right now.