Samyang AF 45mm F1.8 FEvsSigma 18-50mm F2.8 DC DN Contemporary
AF 45mm F1.8 FE
45mm / F1.8
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18-50mm F2.8 DC DN Contemporary
18-50mm / F2.8
27-75mm equiv.
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Which to choose
When the AF 45mm F1.8 FE suits you better
- Brightness1.3 stops brighter — better in low light and blurs the background more
- Weight128g lighter, so easier to carry
When the 18-50mm F2.8 DC DN Contemporary suits you better
- Close focusFocuses as close as 12cm
- Zoom rangeCovers 18-50mm in a single lens
- Weather sealingHas weather sealing
These points are derived mechanically from the numbers. How a lens actually renders does not show up in specifications, so look at samples before deciding.
Size compared
- AF 45mm F1.8 FE56.4mm long × 62mm diameter
- 18-50mm F2.8 DC DN Contemporary74.5mm long × 61.6mm diameter
Specifications compared
| Specification | Samyang AF 45mm F1.8 FE | Sigma 18-50mm F2.8 DC DN Contemporary | Difference |
|---|---|---|---|
| Focal length (wide) | 45mm | 18mm | +27mm |
| Focal length (tele) | 45mm | 50mm | −5mm |
| Max aperture (wide) | F1.8 | F2.8 | 1.3 stops brighter |
| Max aperture (tele) | F1.8 | F2.8 | 1.3 stops brighter |
| Min aperture | F22 | F22 | — |
| Min focus distance | 45cm | 12cm | +0.33m |
| Max magnification | 0.11× | 0.35× | −0.24x |
| Aperture blades | 9blades | 7blades | +2blades |
| Weight | 162g | 290g | −128g |
| Length | 56.4mm | 74.5mm | −18.1mm |
| Diameter | 62mm | 61.6mm | +0.4mm |
| Filter size | 49mm | 55mm | −6mm |
| Released | 2019 | 2021 | −2year |
| Stabilization | No | No | — |
| Weather sealing | No | Yes | No |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as AF 45mm F1.8 FE relative to 18-50mm F2.8 DC DN Contemporary.The highlighted cell is the better side for that specification.
Check prices
AF 45mm F1.8 FE
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18-50mm F2.8 DC DN Contemporary
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AF 45mm F1.8 FE in detail18-50mm F2.8 DC DN Contemporary in detailAll E-mount lenses