Rokinon 20mm f/1.8 ED AS UMC 20mm
Focal length 20mm
Aperture f/22
Mount Nikon F
Weight 488 g
af type manual focus only
lens type prime
43 Overall Score
Price ¥84,193
Snapshot
Pros & Cons
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 (24th percentile)
- Below average versatility (34th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 7 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
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 | f/22 |
| Min Aperture | f/1.8 |
| Constant | No |
| Diaphragm Blades | 7 |
Build
| Mount | Nikon F |
| Format | full-frame |
| Weight | 0.5 kg / 1.1 lbs |
| Filter Thread | 77 |
AF & Stabilization
| AF Type | manual focus only |
| Stabilization | No |
Focus
| Min Focus Distance | 200 |
vs Competition
| Spec | Rokinon 20mm f/1.8 ED AS UMC 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 | Panasonic LUMIX S S-R28200 | Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR | Meike 50mm F1.8 Full Frame STM Auto Focus Prime |
|---|---|---|---|---|---|---|
| Focal Length | 20mm | 16-300mm | 18-300mm | 28-200mm | 16-85mm | 50mm |
| Max Aperture | f/22 | f/3.5 | f/3.5 | f/4 | f/3.5 | f/1.8 |
| Mount | Nikon F | Sony E | Fujifilm X | L-Mount | Nikon F | Panasonic Sigma L |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | true | false | true | false | false |
| Weight (g) | 488 | 615 | 92 | 413 | 59 | 297 |
| AF Type | manual focus only | HLA | VXD linear motor | Autofocus | AF-S | STM |
| Lens Type | prime | zoom | zoom | macro | zoom | prime |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Rokinon 20mm f/1.8 ED AS UMC 20mm | 15.2 | 15.8 | 49.9 | 81.7 | 83.5 | 24.3 | 34.1 | 39.7 | 35.6 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 54.8 | 84.3 | 57.7 | 86.5 | 98.8 | 77 | 99.6 | 83 | 99 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.1 | 75.2 | 96.3 | 88.4 | 73.5 | 77 | 99.2 | 83 | 80.5 |
| Panasonic LUMIX S S-R28200 Compare | 54.8 | 78 | 73.7 | 89.4 | 90.9 | 71.5 | 95.6 | 75.4 | 99.4 |
| Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR Compare | 54.8 | 75.2 | 98.4 | 59.7 | 64.2 | 77 | 94.3 | 88 | 92.3 |
| Meike 50mm F1.8 Full Frame STM Auto Focus Prime Compare | 85.5 | 96 | 71.1 | 96.2 | 57.2 | 93.1 | 34.1 | 49.9 | 80.5 |
Price
Value & Pricing
From ¥84,193
Amazon.co.jp 1 offers From ¥84,193
May 25, 2026 ¥84,193
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
