Sigma 50mm F2 DG DN ContemporaryvsTamron 17-70mm F/2.8 Di III-A VC RXD
50mm F2 DG DN Contemporary
50mm / F2
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17-70mm F/2.8 Di III-A VC RXD
17-70mm / F2.8
26-105mm equiv.
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Which to choose
When the 50mm F2 DG DN Contemporary suits you better
- Brightness1.0 stops brighter — better in low light and blurs the background more
- Weight180g lighter, so easier to carry
When the 17-70mm F/2.8 Di III-A VC RXD suits you better
- Close focusFocuses as close as 19cm
- Zoom rangeCovers 17-70mm in a single lens
- StabilizationHas stabilization
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
- 50mm F2 DG DN Contemporary70mm long × 70mm diameter
- 17-70mm F/2.8 Di III-A VC RXD119.3mm long × 74.6mm diameter
Specifications compared
| Specification | Sigma 50mm F2 DG DN Contemporary | Tamron 17-70mm F/2.8 Di III-A VC RXD | Difference |
|---|---|---|---|
| Focal length (wide) | 50mm | 17mm | +33mm |
| Focal length (tele) | 50mm | 70mm | −20mm |
| Max aperture (wide) | F2 | F2.8 | 1.0 stops brighter |
| Max aperture (tele) | F2 | F2.8 | 1.0 stops brighter |
| Min aperture | F22 | F22 | — |
| Min focus distance | 45cm | 19cm | +0.26m |
| Max magnification | 0.15× | 0.21× | −0.06x |
| Aperture blades | 9blades | 9blades | — |
| Weight | 345g | 525g | −180g |
| Length | 70mm | 119.3mm | −49.3mm |
| Diameter | 70mm | 74.6mm | −4.6mm |
| Filter size | 58mm | 67mm | −9mm |
| Released | 2023 | 2021 | +2year |
| Stabilization | No | Yes | No |
| Weather sealing | Yes | Yes | — |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as 50mm F2 DG DN Contemporary relative to 17-70mm F/2.8 Di III-A VC RXD.The highlighted cell is the better side for that specification.
Check prices
50mm F2 DG DN Contemporary
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17-70mm F/2.8 Di III-A VC RXD
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50mm F2 DG DN Contemporary in detail17-70mm F/2.8 Di III-A VC RXD in detailAll E-mount lenses