Rokinon NCS CS 12mm f/2.0 NCS CS 12mm

★★★★★ 4.7 (151)

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.

Focal length 12mm
Aperture f/2.0
Mount Sony E
Weight 245 g
af type manual focus only
lens type wide-angle
Rokinon NCS CS 12mm f/2.0 NCS CS 12mm lens
75 Overall Score
Also available in:

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

4.7/5 (151 reviews)
👍 Owners consistently rave about the lens's sharpness and value, especially for astrophotography where its fast aperture and wide field of view excel.
🤔 The manual focus experience is generally praised as smooth and easy with focus peaking, but a few note that the lens cap leash can snag on the focus ring.
👎 A recurring complaint is that the lens is APS-C only, and some Sony full-frame users were disappointed to discover it produces heavy vignetting without a crop mode workaround.

How owner sentiment changed over time

Exclusive

Based on when customers actually wrote their reviews — so you can see whether early praise held up.

Owner sentiment has held steady over time
85/100Our AI sentiment readmedium confidence · 21 sources · Jun 2026
1★2★3★4★5★Q2 '17: 4.7★ · 6 reviewsQ3 '17: 4.9★ · 10 reviewsQ4 '17: 3.8★ · 4 reviewsQ1 '18: 4.3★ · 6 reviewsQ2 '18: 4.8★ · 4 reviewsQ3 '18: 5.0★ · 7 reviewsQ4 '18: 4.6★ · 10 reviewsQ1 '19: 4.8★ · 12 reviewsQ2 '19: 4.7★ · 11 reviewsQ3 '19: 4.4★ · 5 reviewsQ4 '19: 4.3★ · 3 reviewsQ1 '20: 4.5★ · 2 reviewsQ2 '20: 4.5★ · 2 reviewsQ3 '20: 4.6★ · 7 reviewsQ4 '20: 5.0★ · 1 reviewQ1 '21: 5.0★ · 4 reviewsQ2 '21: 4.8★ · 4 reviewsQ4 '21: 5.0★ · 1 reviewQ1 '22: 5.0★ · 1 review61046471012115322714411Q2 '17Q4 '17Q2 '18Q4 '18Q2 '19Q4 '19Q2 '20Q4 '20Q2 '21Q1 '22
Avg ratingHappy (4-5★)Unhappy (1-2★)Bar height = number of reviews

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.

Performance Percentiles

AF 14
Bokeh 88.1
Build 78.4
Macro 81.3
Optical 80.1
Aperture 89.9
User Sentiment 63.5
Versatility 34.2
Social Proof 88
Stabilization 36

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 Z 28-400mm f/4-8 VR Viltrox 13mm F1.4 f/1.4 E STM Auto Focus Ultra Wide Angle Panasonic LUMIX S S-R28200
Focal Length 12mm 16-300mm 18-300mm 28-400mm 13mm 28-200mm
Max Aperture f/2.0 f/3.5 f/3.5 f/4 f/1.4 f/4
Mount Sony E Sony E Fuji X Nikon Z Sony E L-Mount
Stabilization false true true true true true
Weather Sealed false true false true false true
Weight (g) 245 615 92 726 415 413
AF Type manual focus only HLA VXD linear motor STM STM Autofocus
Lens Type wide-angle zoom zoom zoom Wide-Angle macro
Compare Compare Compare Compare Compare
Product AfBokehBuildMacroOpticalApertureUser SentimentVersatilitySocial ProofStabilization
Rokinon NCS CS 12mm f/2.0 NCS CS 12mm 1488.178.481.380.189.963.534.28836
Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare 54.584.35985.998.976.9099.67899.1
Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare 98.374.996.687.774.676.930.299.283.181.3
Nikon NIKKOR Z 28-400mm f/4-8 VR Compare 86.977.851.681.39771.2098.983.198.3
Viltrox 13mm F1.4 f/1.4 E STM Auto Focus Ultra Wide Angle Compare 86.996.642.189.482.696.480.834.27481.3
Panasonic LUMIX S S-R28200 Compare 54.577.874.570.891.271.2095.662.299.5

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.

From CA$466 1 offers across 1 retailers
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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.

Usage Scores

Macro (78)Overall (74.7)Budget (61.2)Street (73.4)Travel (53.5)Portrait (76.3)Landscape (55.3)Professional (70.1)Video Cinema (66.5)Wildlife Sports (44.5)

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