Samyang SYIO45AF-E 45mm
Weighing just 162g, this ultra-compact 45mm f/1.8 prime offers a natural 53-degree field of view and a bright aperture for strong subject separation with 9-blade bokeh. Its advanced optical design with two aspherical elements minimizes distortion while delivering high resolution specifically optimized for Sony E-mount mirrorless bodies. This lens is best for travel and street photographers who prioritize a featherlight, pocketable full-frame setup without sacrificing low-light capability.
Focal length 45mm
Aperture f/22
Mount Sony E
Weight 162 g
af type AF
lens type prime
46 Overall Score
Price £247
Snapshot
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.
Owner sentiment has cooled since launch
88/100Our AI sentiment read
Based on 6 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Prime |
| Focal Length Min | 45 |
| Focal Length Max | 45 |
| Elements | 7 |
| Groups | 6 |
| Aspherical Elements | 2 |
| Coating | ウルトラマルチコート |
Aperture
| Max Aperture | f/22 |
| Min Aperture | f/1.8 |
| Constant | Yes |
| Diaphragm Blades | 9 |
Build
| Mount | Sony E |
| Format | full-frame |
| Weight | 0.2 kg / 0.4 lbs |
| Filter Thread | 49 |
AF & Stabilization
| AF Type | AF |
| Stabilization | No |
Focus
| Min Focus Distance | 450 |
| Max Magnification | 0.12x |
vs Competition
| Spec | Samyang SYIO45AF-E 45mm | Tamron Di III VC 28-300mm f/4-7.1 VXD | Sigma Contemporary 18-50mm f/2.8 DC DN | Nikon NIKKOR Z 24-200mm f/4-6.3 VR | Sony E 18-135mm f/3.5-5.6 OSS | Panasonic LUMIX S S-E100 |
|---|---|---|---|---|---|---|
| Focal Length | 45mm | 28-300mm | 18-50mm | 24-200mm | 18-135mm | 100mm |
| Max Aperture | f/22 | f/4 | f/2.8 | f/4 | f/3.5 | f/2.8 |
| Mount | Sony E | Sony E | Sony E | Nikon Z | Sony E | L-Mount |
| Stabilization | false | true | false | true | true | false |
| Weather Sealed | false | true | true | true | false | true |
| Weight (g) | 162 | 590 | 290 | 570 | 326 | 298 |
| AF Type | AF | VXD linear motor | stepping motor | stepping motor | Linear motor | Dual phase linear motor |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Samyang SYIO45AF-E 45mm | 53.9 | 22.9 | 89.4 | 32.6 | 54.4 | 20.2 | 80.9 | 33.6 | 47.7 | 36.8 |
| Tamron Di III VC 28-300mm f/4-7.1 VXD Compare | 98 | 77.9 | 65.1 | 85.8 | 96.7 | 66 | 91.2 | 97.7 | 55.8 | 82.4 |
| Sigma Contemporary 18-50mm f/2.8 DC DN Compare | 86.8 | 81.8 | 86 | 91.7 | 82.2 | 83.9 | 80.9 | 78.6 | 89.8 | 36.8 |
| Nikon NIKKOR Z 24-200mm f/4-6.3 VR Compare | 86.8 | 64.5 | 66.6 | 38.8 | 92.8 | 66 | 0 | 96.6 | 89.8 | 96.9 |
| Sony E 18-135mm f/3.5-5.6 OSS Compare | 98 | 75.4 | 72.5 | 40.3 | 78.5 | 77.3 | 44.7 | 95.8 | 89.8 | 82.4 |
| Panasonic LUMIX S S-E100 Compare | 98 | 87 | 85.8 | 82 | 83.4 | 83.9 | 80.9 | 33.6 | 65.7 | 36.8 |
Price
Value & Pricing
From £247
