Sigma Contemporary 45mm f/2.8 DG DN 45mm
A compact 215g full-frame prime with a fast internal focus system and weather sealing, this lens stands out for its versatile 45mm focal length and all-metal I Series build quality. Its f/2.8 aperture balances light gathering with a remarkably small footprint, making it a discreet everyday carry option. This lens is best for street and travel photographers who prioritize portability and tactile manual controls over maximum background separation.
Focal length 45mm
Aperture f/2.8
Mount L-Mount
Weather Sealed Yes
Weight 215 g
af type stepping motor
lens type prime
71 Overall Score
Price CA$399
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 improved over time
Based on 28 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 | 8 |
| Groups | 7 |
| Coating | Super Multi-Layer Coating |
Aperture
| Max Aperture | f/2.8 |
| Min Aperture | f/2.8 |
| Constant | Yes |
| Diaphragm Blades | 7 |
Build
| Mount | L-Mount |
| Format | full-frame |
| Weather Sealed | Yes |
| Weight | 0.2 kg / 0.5 lbs |
| Filter Thread | 55 |
AF & Stabilization
| AF Type | stepping motor |
| Stabilization | No |
Focus
| Min Focus Distance | 240 |
| Max Magnification | 1:4 |
vs Competition
| Spec | Sigma Contemporary 45mm f/2.8 DG DN 45mm | Tamron Di III VC 28-300mm f/4-7.1 VXD | Nikon NIKKOR Z 17-28mm f/2.8 | Panasonic Leica DG Vario-Elmarit H-ES12035 | Sony E 18-135mm f/3.5-5.6 OSS | Viltrox Pro AF 27mm f/1.2 |
|---|---|---|---|---|---|---|
| Focal Length | 45mm | 28-300mm | 17-28mm | 12-35mm | 18-135mm | 27mm |
| Max Aperture | f/2.8 | f/4 | f/2.8 | f/2.8 | f/3.5 | f/1.2 |
| Mount | L-Mount | Sony E | Nikon Z | Micro Four Thirds | Sony E | Sony E |
| Stabilization | false | true | false | true | true | false |
| Weather Sealed | true | true | true | true | false | true |
| Weight (g) | 215 | 590 | 450 | 306 | 326 | 560 |
| AF Type | stepping motor | VXD linear motor | Stepping Motor | Autofocus | Linear motor | STM |
| Lens Type | prime | zoom | zoom | zoom | zoom | prime |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Sigma Contemporary 45mm f/2.8 DG DN 45mm | 86.8 | 81.8 | 91.5 | 79.9 | 48 | 83.9 | 33.6 | 29.6 | 36.8 |
| Tamron Di III VC 28-300mm f/4-7.1 VXD Compare | 98 | 77.9 | 65.1 | 85.8 | 96.7 | 66 | 97.7 | 55.8 | 82.4 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 86.8 | 87 | 75.2 | 85.8 | 88.2 | 83.9 | 68 | 69.8 | 36.8 |
| Panasonic Leica DG Vario-Elmarit H-ES12035 Compare | 53.9 | 81.8 | 85.4 | 51 | 86.5 | 83.9 | 80.6 | 85.5 | 96.9 |
| Sony E 18-135mm f/3.5-5.6 OSS Compare | 98 | 75.4 | 72.5 | 40.3 | 78.5 | 77.3 | 95.8 | 89.8 | 82.4 |
| Viltrox Pro AF 27mm f/1.2 Compare | 86.8 | 98.5 | 67.4 | 38.5 | 82.2 | 98.6 | 33.6 | 89.8 | 36.8 |
Price
Value & Pricing
From CA$399
