新着 セール中 33%
Rokinon RK20M-C 20mm
The f/1.8 aperture and 20mm full-frame field of view, supported by 2 aspherical and 3 ED elements with Ultra Multi-Coating, produce sharp, contrasty images with minimal flare. Its 497g weight and damped manual focus ring encourage precise, deliberate composition on a tripod. This lens is a solid choice for astrophotographers and low‑light landscape shooters using Canon EF who can trade autofocus for strong wide‑angle optics.
Focal length 20mm
Aperture 22
Mount Canon EF
Weight 497 g
af type manual focus only
lens type prime
37 総合スコア
価格 $399
Snapshot
メリットとデメリット
Pros
- Strong optical (84th percentile) 84th
- Strong macro (82th percentile) 82th
Cons
- Below average af (15th percentile)
- Below average bokeh (16th percentile)
- Below average aperture (25th percentile)
- Below average versatility (34th percentile)
What owners think
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。
85/100当社のAIによる感情分析
日付のある顧客レビュー 7 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。
The proof
パフォーマンス
スペック
全スペック一覧
Optics
| Type | prime |
| Focal Length Min | 20 |
| Focal Length Max | 20 |
| Elements | 13 |
| Groups | 12 |
| Aspherical Elements | 2 |
| ED Elements | 3 |
| Coating | Ultra Multi-Coating |
Aperture
| Max Aperture | 22 |
| Min Aperture | 1.8 |
| Constant | No |
| Diaphragm Blades | 7 |
Build
| Mount | Canon EF |
| Format | full-frame |
| Weather Sealed | No |
| Weight | 0.5 kg / 1.1 lbs |
| Filter Thread | 77 |
AF & Stabilization
| AF Type | manual focus only |
| Stabilization | No |
Focus
| Min Focus Distance | 200 |
競合製品との比較
| Spec | Rokinon RK20M-C 20mm | Canon RF RF28-70mm F2.8 IS STM Macro | Sigma Contemporary 16-300mm f/3.5-6.7 DC OS | Tamron Di III-A 18-300mm f/3.5-6.3 Di III-A VC VXD | Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR | Panasonic LUMIX S S-R28200 |
|---|---|---|---|---|---|---|
| Focal Length | 20mm | 28-70mm | 16-300mm | 18-300mm | 16-85mm | 28-200mm |
| Max Aperture | 22 | 2.8 | f/3.5 | f/3.5 | f/3.5 | f/4 |
| Mount | Canon EF | Canon RF | Sony E | Fuji X | Nikon F | L-Mount |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | true | true | false | false | true |
| Weight (g) | 497 | 495 | 615 | 92 | 59 | 413 |
| AF Type | manual focus only | STM | HLA | VXD linear motor | AF-S | Autofocus |
| Lens Type | prime | zoom | zoom | zoom | zoom | macro |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Rokinon RK20M-C 20mm | 15.2 | 16.3 | 49.3 | 82.1 | 83.6 | 25.4 | 64.3 | 34 | 39.8 | 35.8 |
| Canon RF RF28-70mm F2.8 IS STM Macro Compare | 86 | 88.2 | 67 | 77.7 | 84.5 | 86 | 98.6 | 77.4 | 52.9 | 98.2 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 55.1 | 86.6 | 57.6 | 86.7 | 98.9 | 79.9 | 0 | 99.6 | 78.1 | 99 |
| Tamron Di III-A 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.2 | 78 | 96.2 | 88.6 | 73.5 | 79.9 | 30.3 | 99.2 | 83.2 | 80.7 |
| Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR Compare | 55.1 | 78 | 98.5 | 59.9 | 64.2 | 79.9 | 81.4 | 94.2 | 88.1 | 92.3 |
| Panasonic LUMIX S S-R28200 Compare | 55.1 | 80.8 | 73.5 | 71.7 | 90.9 | 74.5 | 0 | 95.6 | 62.7 | 99.4 |
Price
コストパフォーマンス
最安 $399
B&H Photo 1件 最安 $399
2026年6月3日 $399
用途別スコア
詳細なレビューは近日公開予定です。上記のスペック、スコア、価格、チャートは常に最新です。
