7Artisans Spectrum 50mm T2
The 50mm full-frame design pairs a constant T2.0 aperture with a 12-blade diaphragm for smooth bokeh and a 270-degree focus throw for precise manual pulls. ED glass and high-refractive-index elements suppress color fringing, while the stepless gear ring adapts directly to follow-focus rigs. Best for indie filmmakers and videographers needing a deliberate, full-frame cinema lens with controlled focus on Sony E, L-mount, or Nikon Z cameras.
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概要
The 30-Second Version
The 7Artisans Spectrum 50mm T2.0 scores an 82/100 on user sentiment with a 4.5/5 rating, and owners genuinely love the image quality and smooth manual focus. The 270 degree focus throw is the standout feature, and the 12-blade aperture delivers lovely bokeh. But optical quality sits at the 33rd percentile and build quality at the 13th, so temper expectations. At USD 265 it's a solid deal, at USD 379 it's a stretch.
Pros & Cons
長所
- 270 degree focus throw makes precise manual focus pulls easy 76th
- 12-blade diaphragm produces smooth, natural bokeh 71st
- T2.0 constant aperture handles low light well
- Stabilization at 79th percentile, well above average for a manual prime
- User sentiment score of 82/100 with 4.5/5 rating from owners
短所
- Optical quality at 33rd percentile, below average in our database
- Build quality at 13th percentile, one of the weakest we've seen
- Focus breathing is pronounced despite marketing claims
- Chromatic aberrations noticeable, especially wide open
- No autofocus, manual focus only with no click stops on aperture ring
オーナーの声
The Word on the Street
購入者の評価が時間とともにどう変化したか
独自顧客が実際にレビューを書いた時期に基づいています。発売当初の高評価が続いたかどうかがわかります。
日付のある顧客レビュー 17 件を暦四半期ごとに集計しています。期間別の分析は英語です。
実証データ
Performance
The optical performance is a mixed bag, and the numbers back that up. The 7-element, 5-group design with MC multilayer coating puts optical quality at the 33rd percentile. That's below average in our database. But here's the thing: users keep praising the sharpness. One reviewer compared it directly against a Zeiss Loxia and was surprised by how well it held up in 4K video. The T2.0 aperture lands at the 44th percentile, which is about average, but the 12-blade diaphragm gives you genuinely nice bokeh. Bokeh sits at the 51st percentile, right in the middle of the pack.
The 270 degree focus throw is the standout feature here. That's extra long, even for cine lenses, and it makes precise focus pulls much easier. The stepless aperture ring is another cine-specific touch. But the focus breathing is a real issue. Multiple owners mention it, and the marketing claim of "almost zero breathing" doesn't match what buyers are reporting. Chromatic aberrations are also noticeable, especially wide open. The stabilization score of 79th percentile is interesting for a manual prime, though it's likely more about the lens being easy to hold steady than any actual stabilization tech.
Specifications
Full Specifications
Optics
| Type | Prime |
| Focal Length Min | 50 |
| Focal Length Max | 50 |
| Elements | 7 |
| Groups | 5 |
| ED Elements | 1 |
| Coating | MC multilayer coating |
Aperture
| Max Aperture | f/2 |
| Min Aperture | f/16 |
| Constant | Yes |
| Diaphragm Blades | 12 |
Build
| Mount | Sony E |
| Format | full-frame |
| Weather Sealed | No |
| Weight | 0.7 kg / 1.5 lbs |
AF & Stabilization
| AF Type | manual focus only |
| Stabilization | Yes |
Focus
| Min Focus Distance | 300 |
vs Competition
Against the competition, this lens is a different animal entirely. The Tamron Di III 18-300mm and Sigma Contemporary 16-300mm are superzoom travel lenses with autofocus and massive focal ranges. They're versatile, but they can't touch the T2.0 aperture or the 12-blade bokeh this 7Artisans delivers. The Nikon NIKKOR 20059 and Sony E 18-135mm are also autofocus zooms aimed at general photography. The 7Artisans is a specialized cine lens. It's worse at versatility, sitting at the 33rd percentile, and it's manual focus only. But for video work, the long focus throw and stepless aperture are features those zooms simply don't have. The trade-off is clear: this lens does one thing well, while the competitors do many things adequately.
| Spec | 7Artisans Spectrum 50mm T2 | Canon RF 24-105mm f/2.8 L IS USM Z | Viltrox LAB AF 35mm f/1.2 LAB FE | Sony G Master FE 50-150mm f/2 GM | Sigma Art 17-40mm f/1.8 DC | Tamron Di III 70-180mm f/2.8 VC VXD G2 |
|---|---|---|---|---|---|---|
| Focal Length | 50mm | 24-105mm | 35mm | 50-150mm | 17-40mm | 70-180mm |
| Max Aperture | f/2 | f/2.8 | f/1.2 | f/2 | f/1.8 | f/2.8 |
| Mount | Sony E | Canon RF | Sony E | Sony E | Fujifilm X | Sony E |
| Format Coverage | full-frame | full-frame | full-frame | full-frame | APS-C | full-frame |
| Stabilization | true | true | false | false | false | true |
| Weather Sealed | false | true | true | true | true | true |
| Weight (g) | 689 | 1315 | 910 | 1340 | 535 | 855 |
| AF Type | manual focus only | Nano USM | VCM | XD linear motors | HLA (High-response Linear Actuator) | VXD |
| Lens Type | prime | zoom | prime | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| 製品 | AF | Bokeh | Build | Macro | Reach | Video | Optical | Aperture | User Sentiment | Wide Angle | Portability | Versatility | ユーザー評価 | Affordability | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7Artisans Spectrum 50mm T2 | 20.8 | 60.5 | 30.6 | 52 | 44 | 28.6 | 21.6 | 64.1 | 49.7 | 39.9 | 32.8 | 33.1 | 36.2 | 71.2 | 76.2 |
| Canon RF 24-105mm f/2.8 L IS USM Z Compare | 89.9 | 78.8 | 95.2 | 69.4 | 73.9 | 88 | 97.9 | 43.8 | 81.8 | 74.5 | 11.3 | 91.9 | 87.8 | 8.1 | 96 |
| Viltrox LAB AF 35mm f/1.2 LAB FE Compare | 95.4 | 69 | 90.6 | 45.3 | 29.4 | 72.3 | 92.8 | 96.1 | 81.8 | 53.2 | 20.7 | 33.1 | 87.8 | 33.3 | 36.2 |
| Sony G Master FE 50-150mm f/2 GM Compare | 95.4 | 95.9 | 98.9 | 52 | 80.3 | 88 | 95.7 | 64.1 | 66.6 | 39.9 | 11 | 82.3 | 92.6 | 7.4 | 36.2 |
| Sigma Art 17-40mm f/1.8 DC Compare | 95.4 | 53.2 | 95.2 | 54.3 | 53.2 | 88 | 97.3 | 74.8 | 98.8 | 68.6 | 47.1 | 75.4 | 92.6 | 33.5 | 36.2 |
| Tamron Di III 70-180mm f/2.8 VC VXD G2 Compare | 95.4 | 86.6 | 77.3 | 75.7 | 81.1 | 84.3 | 96.5 | 43.8 | 66.6 | 29.1 | 21.9 | 77.4 | 92.6 | 27.8 | 97.4 |
価格
Value & Pricing
Pricing is all over the place on this one. US listings range from USD 265 to USD 379, a spread of USD 114 across just three listings. That's a huge gap for the same lens. If you're shopping, the USD 265 listing is the obvious pick. At that price, the value proposition is strong. You're getting a full-frame cine lens with a 270 degree focus throw and 12-blade aperture for less than many budget autofocus primes. At USD 379, it's a harder sell. The optical quality at the 33rd percentile and build quality at the 13th percentile start to feel more painful when you're paying closer to USD 400. Shop around and don't pay the high end.
詳細情報
Overview
The 7Artisans Spectrum 50mm T2.0 is a full-frame manual focus cine lens that lands in a weird spot in our database. It's not a chart-topper by any stretch, with optical quality sitting at the 33rd percentile and build quality down at the 13th. But the user sentiment score of 82/100 tells a different story. Owners genuinely like this thing. The 4.5/5 rating across 17 reviews isn't huge sample size, but it's consistent. People keep saying the same thing: great image quality for the money, smooth focus, lovely bokeh.
What you're getting is a 50mm prime with a constant T2.0 aperture, 12 diaphragm blades, and a 270 degree focus throw. That's a proper cine lens feature set at a budget price. The stabilization sits at the 79th percentile, which is well above average for a manual prime. Macro capability is solid at the 69th percentile. But versatility is rough at the 33rd, and the autofocus score is basically irrelevant since there isn't any. This is a manual focus lens, full stop.
Common Questions
Q: Does this lens work on crop sensor cameras?
Yes, it works on crop sensor bodies like the Sony A7 series and Nikon Z50. The full-frame coverage means you get a tighter effective field of view on crop sensors, roughly 75mm equivalent. Users specifically praise it on crop-sensor Sony cameras for video work.
Q: Is the focus breathing really as bad as some reviews say?
Multiple owners report noticeable focus breathing despite the marketing claim of almost zero breathing. The optical quality sits at the 33rd percentile in our database, so this isn't a top-tier performer. If focus breathing is a dealbreaker for your video work, you may want to test this lens before committing.
Q: How does the T2.0 aperture compare to regular f-stops?
T2.0 is a transmission stop, meaning it measures actual light reaching the sensor rather than just the aperture ratio. It's roughly equivalent to f/2.0 in terms of light gathering. The 12-blade diaphragm helps create smooth, circular bokeh at wide apertures, which owners consistently praise.
Who Should Skip This
Skip this lens if you need autofocus. The AF score sits at the 15th percentile, and there's no autofocus at all. It's manual focus only. Also skip it if build quality matters to you. The 13th percentile build score is one of the weakest in our database, and the 689g weight gets called out by owners as heavy for handheld use. If you shoot run-and-gun video where focus breathing is a constant issue, the pronounced breathing reported by multiple buyers will frustrate you. And if you're a stills photographer looking for a versatile 50mm, the 33rd percentile versatility score and lack of autofocus make this a poor choice compared to budget autofocus primes.
Verdict
The 7Artisans Spectrum 50mm T2.0 is a budget cine lens that punches above its price for video shooters who don't mind manual focus. The 82/100 user sentiment score and 4.5/5 rating suggest owners are genuinely happy with what they got. The 270 degree focus throw is the headline feature, and the 12-blade aperture delivers smooth bokeh that users consistently praise. But the optical quality at the 33rd percentile and build quality at the 13th percentile are real concerns. The focus breathing issue is also hard to ignore when the marketing specifically claims it's almost eliminated. If you're a hobbyist or semi-pro videographer on a budget, this lens makes sense. If you need autofocus or shoot in situations where focus breathing matters, look elsewhere.
Usage Scores
- Macro25.3
- 総合28.5
- Budget55.2
- Street33.8
- Travel20
- Portrait37.7
- Landscape17.8
- Professional28
- Video Cinema28.5
- Wildlife Sports18.3