Comparison of Nikon 50mm ƒ/1.8G AF-S Nikkor and Sigma 45mm f/2.8 DG DN Contemporary [S]ave
| Attribute |  Nikon 50mm ƒ/1.8G AF-S Nikkor × |  Sigma 45mm f/2.8 DG DN Contemporary × |
|---|---|---|
| Filter Size (mm) | 58 | 55 |
| Notes | Included Accessories: HB-47 Lens Hood, CL-1013 Lens Case | Available AF Mounts: L-Mount, Sony E-Mount |
| Closest Focus (m) | 0.45 | 0.24 |
| Magnification Ratio (x) | 0.15 | 0.25 |
| Type | Standard Prime | Wide Prime |
| Length (mm) | 53 | 46.2 |
| APS Equivalent | 75mm | 1.5x: 67.5mm; 1.6x: 72mm |
| Diagonal Angle of View (degree) | 47.00 | 51.30 |
| Image Circle | 35mm | 35mm |
| Focal Length (mm) | 50.00 | 45.00 |
| Brand | Nikon | Sigma |
| Name | Nikon 50mm ƒ/1.8G AF-S Nikkor | Sigma 45mm f/2.8 DG DN Contemporary |
| Weight (g) | 230 | 215 |
| Aperture (f) | 1.80 - 16.00 | 2.80 - 22.00 |
| Diaphragm Blades | 7 | 7 |
| Diaphragm Blades Type | rounded | rounded |
| Lens Construction | 7 Elements in 6 groups, including one aspherical element | 8 elements in 7 groups |
| Diameter (mm) | 71 | 64 |
| Focus Details | Slient Wave Motor (AF-S) with full-time manual focus override (M/A / M switch) | Smooth, quiet and high-speed AF via stepping motor |
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