Samyang AF SYIO3518-E 35mm
Weighing just 210g with weather sealing, this 35mm f/1.8 prime combines a bright aperture with an optical design using two aspherical and two ED elements for sharp, high-contrast images. Its linear STM motor delivers fast, quiet autofocus, and the customizable focus ring switch adds direct control over camera settings. This lens is best for travel and street photographers who need a compact, full-frame E-mount lens that won't weigh down their kit.
Snapshot
The 30-Second Version
This lens is ridiculously light at 210g and ranks in the 90th percentile for build quality, making it one of the best-built budget primes we've seen. Autofocus is fast and accurate, landing in the 86th percentile, and sharpness is solid for the price. Bokeh is a weak point and there's no stabilization, but for street and travel shooters who value portability, it's a steal at the lower end of its price range.
Pros & Cons
Pros
- Top-tier build quality for the weight, 90th percentile 91st
- Fast, accurate autofocus that ranks in the 86th percentile 87th
- Incredibly light at 210g, perfect for all-day carry 73rd
- Sharp optics with two aspherical and two ED elements 69th
- Weather-sealed construction for peace of mind
Cons
- Bokeh quality is disappointing, 28th percentile
- No optical stabilization, ranks in the 36th percentile
- Max aperture of f/1.8 is just average, 24th percentile
- Some users report compatibility hiccups with the A7IV
- No dedicated aperture ring for tactile control
What owners think
The Word on the Street
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
- Q1 202550/100
Mixed reviews: one praises sharpness and autofocus, another reports severe optical flaws for astrophotography, a third is brief but positive.
- Sharp center, good contrast, light, quiet autofocus.
- Decentering, purple fringing, coma, astigmatism — unsuitable for astro.
- Sample variation: first lens decentered, second better but still flawed.
- Fast service and overall positive experience.
- Q4 2022100/100
Buyers praised the lens for its sharpness, clarity, and value, calling it competitive with premium brands at a lower price.
- Sharpness and image quality rival more expensive brands.
- Excellent value at this price point.
- Solid build and sleek design.
- Great for portrait work alongside an 85mm.
- Q2 202187/100
Buyers praised the lens as affordable, lightweight, and sharp with fast autofocus on Sony cameras. Some wished for weather sealing.
- Affordable price with excellent build and image quality.
- Lightweight and compact, ideal for street photography.
- Fast and reliable autofocus, including eye-AF and video.
- Lack of weather sealing noted as a drawback.
- Q1 2021100/100
Buyers praised the lens for its sharpness, affordability, compact size, and lightweight design, making it a great value alternative to pricier options.
- Sharp image quality and good performance at f/1.8
- Affordable price compared to Sony and other brands
- Compact and lightweight design ideal for travel
- Wish it came with a lens station; otherwise well received
Based on 28 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Sharpness is where this lens earns its keep. With 10 elements in 8 groups, including two aspherical and two ED elements, it punches well above its price tag. The optical score sits in the 67th percentile, which translates to solid, reliable image quality that won't embarrass itself next to pricier glass. Autofocus is quick and quiet, landing in the 86th percentile, and we've seen it keep up nicely on bodies like the A7III and A7C. Bokeh is a weaker spot, ranking in the 28th percentile, so don't expect buttery-smooth background blur. The 9-blade diaphragm helps a bit, but this lens is more about getting the shot than painting with light.
Specifications
Full Specifications
Optics
| Type | Prime |
| Focal Length Min | 35 |
| Focal Length Max | 35 |
| Elements | 10 |
| Groups | 8 |
| Aspherical Elements | 2 |
| ED Elements | 2 |
| Coating | Ultra Multi-Coating |
Aperture
| Max Aperture | f/22 |
| Min Aperture | f/1.8 |
| Constant | Yes |
| Diaphragm Blades | 9 |
Build
| Mount | Sony E |
| Format | full-frame |
| Weather Sealed | Yes |
| Weight | 0.2 kg / 0.5 lbs |
| Filter Thread | 58 |
AF & Stabilization
| AF Type | linear STM |
| Stabilization | No |
Focus
| Min Focus Distance | 290 |
| Max Magnification | 1:5.88 |
vs Competition
Stacked against the Sony FE 35mm f/1.8, the Samyang holds its own on sharpness and autofocus while undercutting the price significantly at most retailers. The Sigma Contemporary 16-300mm and Tamron 18-300mm are zooms, so they offer more versatility but can't touch the Samyang's low-light capability or compact size. The Meike 50mm f/1.8 is another budget prime, but it's a different focal length and lacks the Samyang's weather sealing and autofocus polish. If you need a fast, light 35mm for Sony E-mount, the Samyang is the value leader, but the Sony is still the safer bet for absolute compatibility.
| Spec | Samyang AF SYIO3518-E 35mm | Nikon NIKKOR Z 17-28mm f/2.8 | Tamron Di III 28-75mm f/2.8 VXD G2 | Sigma Contemporary 10-18mm f/2.8 DC DN | Panasonic Leica DG Vario-Elmarit H-ES12060 | Canon RF 28-70mm f/2.8 IS STM |
|---|---|---|---|---|---|---|
| Focal Length | 35mm | 17-28mm | 28-75mm | 10-18mm | 12-60mm | 28-70mm |
| Max Aperture | f/22 | f/2.8 | f/2.8 | f/2.8 | f/2.8 | f/22 |
| Mount | Sony E | Nikon Z | Sony E | Sony E | Micro Four Thirds | Canon RF |
| Stabilization | false | false | false | false | true | true |
| Weather Sealed | true | true | true | true | true | true |
| Weight (g) | 210 | 450 | 540 | 260 | 320 | 495 |
| AF Type | linear STM | Stepping Motor | VXD | Autofocus | linear motor | STM |
| Lens Type | prime | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Samyang AF SYIO3518-E 35mm | 87 | 25.9 | 91 | 73.2 | 68.6 | 22.6 | 63.3 | 33.6 | 60.6 | 38 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87 | 88.1 | 73.6 | 86.3 | 87 | 85.8 | 90.8 | 68.1 | 64.6 | 38 |
| Tamron Di III 28-75mm f/2.8 VXD G2 Compare | 54.6 | 88.1 | 67.2 | 87.3 | 87.8 | 85.8 | 80.4 | 78.2 | 83.1 | 38 |
| Sigma Contemporary 10-18mm f/2.8 DC DN Compare | 54.6 | 83.5 | 87.3 | 93.3 | 81.6 | 85.8 | 80.4 | 69.1 | 68.8 | 38 |
| Panasonic Leica DG Vario-Elmarit H-ES12060 Compare | 98 | 88.1 | 83.1 | 50.4 | 90.2 | 85.8 | 44.2 | 93.1 | 63.5 | 83.2 |
| Canon RF 28-70mm f/2.8 IS STM Compare | 87 | 25.9 | 70.2 | 80.4 | 85 | 22.6 | 98.1 | 77.2 | 87.9 | 98.5 |
Price
Value & Pricing
Pricing is a bit of a wild west situation. We're seeing this lens listed anywhere from $328 to a frankly absurd $64,587 across vendors, so you'll want to shop smart. At the lower end of that spread, the value proposition is outstanding. You're getting build quality and autofocus performance that rival lenses costing twice as much. Just don't pay the higher prices, because at that point you're in Sony FE 35mm f/1.8 territory and the Samyang's minor optical trade-offs become harder to swallow.
Read more
Overview
The Samyang AF 35mm f/1.8 FE lands in the 90th percentile for build quality in our database, which is impressive for a lens that weighs just 210g. That featherweight design, paired with a bright f/1.8 aperture, makes it a natural fit for anyone who wants a full-frame setup that won't weigh down their neck after a few hours of shooting. The autofocus is a standout too, ranking in the 86th percentile thanks to a linear STM motor that plays nice with Sony bodies.
Common Questions
Q: Is this lens weather sealed?
Yes, Samyang has included weather sealing around key areas of the lens. It's not fully submersible, but it should handle light rain and dust without issue. This is a nice perk at this price point and contributes to its 90th percentile build quality ranking.
Q: How does the autofocus perform for video?
The linear STM motor is quiet and smooth, which makes it a solid choice for video work. It ranks in the 86th percentile for autofocus overall, so you can expect reliable tracking and minimal hunting on most Sony bodies. Just keep in mind there's no optical stabilization, so handheld footage might get shaky.
Q: Does it work with the Sony A7IV?
Most users report it works fine, but we've seen a handful of complaints about compatibility issues specifically with the A7IV. It's not a widespread problem, but it's worth buying from a retailer with a good return policy just in case your copy doesn't play nice.
Who Should Skip This
If bokeh quality is a priority, look elsewhere. This lens ranks in the 28th percentile for bokeh, so portrait shooters who want creamy backgrounds will be disappointed. Video shooters who rely on handheld stabilization should also think twice, since there's no optical stabilization and the 36th percentile ranking reflects that. And if you're shooting on an A7IV, the scattered compatibility reports might be enough reason to spend a bit more on the native Sony 35mm f/1.8 for guaranteed peace of mind.
Verdict
The Samyang AF 35mm f/1.8 FE is a sharp, lightweight prime that delivers where it counts. Build quality and autofocus are genuinely impressive, and the compact design makes it a joy to carry. The bokeh won't win any awards and the lack of stabilization is a bummer for video shooters, but for street and travel photography, this lens is a fantastic value. Just make sure you're buying from a vendor with a good return policy in case your A7IV gets fussy.