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.
حول هذا الـ Lens
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
- Max aperture 22
- Mount Canon EF
- Weight g 497
- Af type manual focus only
- Lens type prime
نظرة عامة
الأداء
المزايا والعيوب
Pros
- Strong optical (84th percentile) 84th
- Strong macro (81th percentile) 81th
Cons
- Below average af (14th percentile) 14th
- Below average bokeh (16th percentile) 16th
- Below average aperture (24th percentile) 24th
- Below average social proof (31th percentile) 31th
المواصفات التقنية
المواصفات الكاملة
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 |
القيمة مقابل السعر
مقارنة بالمنافسين
| Spec | Rokinon RK20M-C 20mm | 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 | Panasonic LUMIX S S-R28200 | Canon L-series RF 24-70mm f/2.8L IS USM |
|---|---|---|---|---|---|---|
| Focal Length | 20mm | 16-300mm | 18-300mm | 28-400mm | 28-200mm | 24-70mm |
| Max Aperture | 22 | f/3.5 | f/3.5 | f/4 | f/4 | 2.8 |
| Mount | Canon EF | Sony E | Fuji X | Nikon Z | L-Mount | Canon RF |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | true | false | true | true | true |
| Weight (g) | 497 | 615 | 92 | 726 | 413 | 805 |
| AF Type | manual focus only | HLA | VXD linear motor | STM | Autofocus | Nano USM |
| Lens Type | prime | zoom | zoom | zoom | macro | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Rokinon RK20M-C 20mm | 14 | 15.6 | 50.6 | 81.3 | 84.4 | 24.2 | 63.5 | 34.2 | 30.5 | 35.9 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 54.4 | 83.8 | 58.9 | 85.9 | 98.9 | 76.4 | 0 | 99.6 | 89.4 | 99.1 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.3 | 74.2 | 96.4 | 87.7 | 74.8 | 76.4 | 30.1 | 99.2 | 68.1 | 81.2 |
| Nikon NIKKOR Z 28-400mm f/4-8 VR Compare | 86.8 | 77.2 | 51.5 | 81.3 | 97.1 | 70.7 | 0 | 98.9 | 74.1 | 98.3 |
| Panasonic LUMIX S S-R28200 Compare | 54.4 | 77.2 | 74.2 | 70.8 | 91.3 | 70.7 | 0 | 95.6 | 89.4 | 99.5 |
| Canon L-series RF 24-70mm f/2.8L IS USM Compare | 94.6 | 85.7 | 45.4 | 44 | 95.5 | 83.2 | 30.1 | 80.7 | 89.4 | 96.4 |
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