Rokinon NCS CS 12mm f/2.0 NCS CS 12mm
The 12mm f/2.0 NCS CS lens delivers a 24mm equivalent field of view with a fast f/2.0 aperture, using 12 elements in 10 groups—including three ED and two aspherical elements—for sharp, low-distortion images. Its compact 255g all-metal build and manual focus operation provide a lightweight, budget-friendly option that encourages deliberate creative control on Micro Four Thirds cameras. This lens is ideal for landscape and astrophotography shooters who need strong low-light performance and minimal distortion without adding bulk.
Snapshot
The 30-Second Version
The Rokinon 12mm f/2.0 is a manual focus wide-angle lens that delivers sharp images and a fast aperture at a shockingly low price. It's a top pick for astrophotography and landscape shooters on APS-C and Micro Four Thirds cameras who don't mind twisting a focus ring. For under $250, it's one of the easiest recommendations we can make.
Pros & Cons
Pros
- Fast f/2 aperture for low light and astro 90th
- Sharp center performance, even wide open 88th
- Lightweight and portable (255g) 88th
- Excellent value compared to autofocus competitors 81th
- Smooth manual focus with nice throw for precise control
Cons
- No autofocus, which can slow you down
- Not full-frame compatible (APS-C or MFT only)
- Lens cap leash sometimes interferes with focusing
- Corner sharpness needs stopping down to f/4 for best results
- No weather sealing, so be cautious in damp conditions
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.
- Q2 202182/100
Buyers praised the lens as a solid, affordable manual focus option for astrophotography and travel, with good build and sharpness. Notable quirks include minor dial inaccuracy and a cap leash that interferes with the focus ring.
- Solid build, good value, and sharp images for manual focus wide-angle
- Great for astrophotography and travel due to infinity markings and light weight
- Cap leash interferes with focus ring; lens cap is large
- Dial stops not 100% accurate but not a deal breaker
- Q1 2021100/100
All reviews are 5-star, praising the wide angle lens for its quality, value, and versatility in astrophotography and landscapes.
- Wide angle lens quality is superb, enhancing photos and manual focus technique.
- Great value for money; fast aperture f2.0 is a plus.
- Versatile for multiple purposes like astrophotography and landscapes.
- Lightweight and easy to carry.
- Q3 202074/100
Buyers praised the low price, wide field of view, and manual focus. A few noted the lack of autofocus may cause blurry shots.
- Excellent value and price for a wide manual lens.
- Wide angle and good image quality, especially for landscapes and astro.
- No autofocus can lead to out-of-focus pictures.
- Lens flare not fully controlled; avoid shooting into direct light.
- Q4 201980/100
Buyers praised the lens for sharpness, value, and fast aperture, but noted corner coma at f/2 for astrophotography, which clears up when stopped down.
- Good sharpness and build quality for the price, suitable for general and gimbal use.
- Fast f/2 aperture is useful for low-light candids but causes coma in corners, affecting star-field shots.
- Stopped down to f/5.6 or f/8, the lens becomes excellent for landscapes and cityscapes.
- Lightweight design beneficial for gimbal mounting.
- Q3 201984/100
Buyers praised the wide, fast, and affordable Rokinon 12mm for landscape and astrophotography, but noted manual focus, lack of autofocus, no EXIF data, and some image softness.
- Wide, fast aperture (F2), affordable price, good for astro and landscapes.
- Manual focus only; no autofocus or EXIF data; requires camera setting change.
- Several reported softness at edges or lower sharpness than competitors.
- Vignetting present; accuracy of focus is critical for usability.
- Q2 201991/100
Buyers praised the lens for its value, sharpness, and low-light performance with Sony APS-C cameras. A few mentioned minor drawbacks like no weather sealing and a basic lens bag.
- Excellent value for the price with great build quality and sharpness.
- Performs well in low light, concerts, and astrophotography.
- Lightweight and portable, ideal for travel and everyday use.
- Lacks weather sealing and comes with a cheap lens bag.
- Q1 201990/100
Buyers praised the lens for its sharpness, value, and wide-angle performance, with some mentioning issues with EXIF data and copy variation.
- Exceptional sharpness across the frame, often praised even wide open.
- Excellent value for money, high quality at a low price point.
- Some users report quality control issues: 3 of 4 copies good; EXIF data missing or incorrect.
- Compact and solid build with smooth manual focus ring; well-suited for travel.
- Q4 201884/100
Buyers praise sharpness, value, and low-light performance for astro/landscape. Some report stiff focus ring and loose mount fit.
- Sharp image quality, especially at center, with good color and low-light performance.
- Excellent value for the price, solid build, compact and lightweight.
- Stiff/tight focus ring makes manual focusing difficult; lens mount can feel loose.
- Works well with focus peaking and IBIS on Sony and Fuji cameras.
- Q3 2018100/100
All 7 reviews in Q3 2018 rate the lens 5 stars, praising its sharpness, low-light performance, and value.
- Sharp, especially corner-to-corner and in low light.
- Excellent value; good performance for the price.
- Works well for landscapes, architecture, real estate, and night sky.
- Easy to use, fast delivery, and good bundle deals.
- Q2 201890/100
Buyers praise this lens for being lighter, faster, and cheaper than alternatives, and find it versatile for interiors, events, and band photography.
- Lighter and faster than expensive alternatives, great value.
- Versatile for interiors, landscapes, astro, and band photography.
- Manual focus can be tricky; harder to focus than similar lenses.
- Clear, professional results for real estate and events.
- Q1 201876/100
Buyers praised the lens for its sharpness, budget-friendly price, and good performance in astro and cold conditions, noting some flaws like wobbly mount and stiff focus ring.
- Sharp wide lens for interior, market, nightscape, and street photos.
- Budget-friendly option with manual focus fine for wide-angle use.
- Wobbly mount and stiff focus ring, but acceptable for the price.
- Lens cap fits poorly; separate hood needed to hold polarizer.
- Q4 201775/100
Buyers praise value and image clarity, but one defective copy caused disappointment and inconsistency.
- Great clarity and value for landscapes, astrophotography, and architecture.
- Works well with focus peaking on mirrorless cameras despite manual focus.
- One defective copy showed inconsistencies across all apertures and focus methods.
- Solid build quality but requires camera setting adjustment to shoot without lens.
- Q3 201793/100
Buyers praise this affordable 12mm f/2.0 lens for astrophotography and landscapes, citing sharpness, light weight, and great value.
- Excellent sharpness and image quality, especially for night and low light.
- Great value for the price, considered best 12mm lens for money.
- Some minor focus difficulty, vignetting in darkness, and slight fisheye effect.
- Build quality is good but minor play between camera and lens noted.
- Q2 201783/100
Buyers praised the lens as excellent value, sharp when stopped down, and ideal for landscapes. Some noted it's fully manual and requires skill for focus in low light or with moving subjects.
- Excellent value for price
- Sharp edge to edge when stopped down, good for astrophotography
- Well-suited for landscape photography
- Fully manual focus demands practice; struggles with moving subjects in low light
Based on 100 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Optically, this little lens punches above its price class. The f/2 aperture is bright enough to let you shoot handheld in dim light, and it's in the 83rd percentile for aperture speed among similar wide-angle glass, so you're getting one of the fastest options without breaking the bank. Bokeh isn't usually a wide-angle priority, but the 7-blade diaphragm produces decent subject separation when you get close, landing it in the 80th percentile. Build quality feels solid (76th percentile), and the lens has a reassuring heft. Sharpness is excellent in the center even wide open, though corners soften a bit until f/4. The NCS coating does a good job keeping flare under control, and chromatic aberration is minimal thanks to those ED elements. Manual focusing is smooth and precise, with a long throw that helps nail critical focus. Is it the absolute sharpest 12mm out there? No—its optical performance is about middle of the pack overall—but for the price, you'll be hard-pressed to complain.
Specifications
Full Specifications
Optics
| Type | wide-angle |
| Focal Length Min | 12 |
| Focal Length Max | 12 |
| Elements | 12 |
| Groups | 10 |
| Aspherical Elements | 2 |
| ED Elements | 3 |
| Coating | nanocrystal anti-reflective coating |
Aperture
| Max Aperture | f/2.0 |
| Min Aperture | 2 |
| Constant | Yes |
Build
| Mount | Sony E |
| Format | APS-C |
| Weight | 0.2 kg / 0.5 lbs |
| Filter Thread | 67 |
AF & Stabilization
| AF Type | manual focus only |
| Stabilization | No |
Focus
| Min Focus Distance | 200 |
vs Competition
The most direct competitor is the Sigma 10-18mm f/2.8 DC DN, which offers a zoom range and snappy autofocus for about $600. It's the better pick if you need quick, silent focusing for video or fast-paced street work, but it's heavier and costs more. The Viltrox 15mm f/1.7 is another autofocus option that's even faster, but at 15mm, you lose a noticeable chunk of field of view—if 12mm matters for your landscapes or astro scenes, the Rokinon still rules. On the Micro Four Thirds side, the Panasonic Leica DG 12mm f/1.4 is a stunning lens but costs around $1,300. For less than a quarter of that, the Rokinon gives you very similar sharpness if you don't mind manual focus. So, if autofocus is non-negotiable, save up for the Sigma or Viltrox; if you're after wide, fast, and cheap, the Rokinon is still the one to beat.
| Spec | Rokinon NCS CS 12mm f/2.0 NCS CS 12mm | Sigma Contemporary 16-300mm f/3.5-6.7 DC OS | Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD | Nikon Nikkor 2166 | Panasonic LUMIX S S-R28200 | Canon EF-S 18-135mm f/3.5-5.6 IS USM |
|---|---|---|---|---|---|---|
| Focal Length | 12mm | 16-300mm | 18-300mm | 55-200mm | 28-200mm | 18-135mm |
| Max Aperture | f/2.0 | f/3.5 | f/3.5 | f/4 | f/4 | f/3.5 |
| Mount | Sony E | Sony E | Fuji X | Nikon F | L-Mount | Canon EF-S |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | true | false | false | true | false |
| Weight (g) | 245 | 615 | 92 | 255 | 413 | 515 |
| AF Type | manual focus only | HLA | VXD linear motor | Silent Wave Motor | Autofocus | STM |
| Lens Type | wide-angle | zoom | zoom | telephoto | macro | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Rokinon NCS CS 12mm f/2.0 NCS CS 12mm | 14.6 | 88.3 | 77.8 | 81.2 | 79.8 | 90.1 | 63.6 | 34.1 | 87.9 | 35.9 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 54.9 | 84.6 | 58.3 | 85.9 | 98.9 | 77.5 | 0 | 99.6 | 78 | 99 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.2 | 75.5 | 96.4 | 87.8 | 74.3 | 77.5 | 30.3 | 99.2 | 83.1 | 81.1 |
| Nikon Nikkor 2166 Compare | 54.9 | 70.3 | 76.8 | 81.2 | 66.4 | 71.8 | 91.7 | 85.3 | 83.1 | 92.5 |
| Panasonic LUMIX S S-R28200 Compare | 54.9 | 78.4 | 73.9 | 70.8 | 91.2 | 71.8 | 0 | 95.6 | 62.6 | 99.4 |
| Canon EF-S 18-135mm f/3.5-5.6 IS USM Compare | 86.6 | 75.5 | 46.6 | 33.2 | 79.8 | 77.5 | 0 | 96 | 78 | 92.5 |
Price
Value & Pricing
Price is where this lens really shines, though you'll see some wild numbers online—we've spotted it as high as an absurd $64,191, but the real street price hovers around $249. At that level, it's an absolute steal. Compare that to autofocus rivals like the Sigma 10-18mm f/2.8 or the Viltrox 15mm f/1.7, which cost two to three times more, and you'll understand why budget-minded shooters love this thing. If you find a clean used copy under $200, don't hesitate. For sheer bang-for-the-buck, few lenses touch it.
Read more
Overview
If you're looking for a fast, affordable wide-angle lens for your mirrorless camera, the Rokinon 12mm f/2.0 NCS CS has probably popped up in your searches. It's a manual focus prime that's built a cult following among landscape and astrophotography shooters, and for good reason. At around $250 on a good day, it undercuts almost every autofocus alternative while giving you a bright f/2 aperture and solid optics. The 12mm focal length on APS-C bodies gives you a roughly 18mm equivalent field of view, which is wide enough to swallow whole scenes without veering into fisheye territory. For Micro Four Thirds users, it becomes a 24mm equivalent, which is still nicely wide for street scenes and environmental portraits. The lens is tiny (255g) and feels robust in the hand, with a smooth focusing ring that makes manual operation a breeze when you pair it with focus peaking. It's not weather sealed and it won't auto-focus, but if those aren't dealbreakers, you'll likely find it's one of the best value lenses in your kit.
Common Questions
Q: Is the Rokinon 12mm good for astrophotography?
Absolutely—it's one of the most popular budget astro lenses out there. The f/2 aperture gathers plenty of light, and the optical design keeps coma and chromatic aberration low, so stars stay sharp across the frame.
Q: Does the Rokinon 12mm have autofocus?
No, it's a completely manual focus lens. But for wide-angle shooting, many photographers find manual focus quick and accurate, especially if your camera has focus peaking or magnification aids.
Q: Will the Rokinon 12mm work on a full-frame Sony camera?
It's designed for APS-C sensors, so on a full-frame body like the Sony A7 series, you'll see strong vignetting. You can use it in APS-C/Super 35mm crop mode, but that reduces resolution significantly.
Q: How does the Rokinon 12mm compare to the Sigma 10-18mm f/2.8?
The Sigma is a zoom with autofocus, making it more versatile for video and quick shooting, but it costs much more. The Rokinon is sharper at shared apertures and far cheaper, so it wins if manual focus and a fixed focal length aren't drawbacks for you.
Who Should Skip This
This lens isn't for everyone. If you shoot video that requires smooth, silent autofocus pulls, or if you're an event photographer who can't afford to fiddle with a focus ring, you'll likely find the Rokinon frustrating. Full-frame users who don't want to mess with crop modes should also look elsewhere—this glass just doesn't cover a full sensor. And if weather resistance is a must for your adventures, consider saving up for a sealed alternative like the Sigma 10-18mm or a native weather-sealed wide prime.
Verdict
So, should you buy this? If you're shooting landscapes, astrophotography, or anything where you have time to focus manually, the answer is a resounding yes. The image quality you get for the money is ridiculous, and the 12mm focal length opens up creative possibilities that kit zooms can't touch. It's been a favorite for years, and it remains one of the best wide-angle values we've seen. On the flip side, if you rely heavily on autofocus for events, vlogging, or fast-moving subjects, you'll be happier with something like the Sigma 10-18mm. And if you're on a full-frame Sony body, skip this unless you're okay losing resolution in APS-C crop mode.
