Sigma 30mm F1.4 DC DNvsTamron 17-70mm F/2.8 Di III-A VC RXD
30mm F1.4 DC DN
30mm / F1.4
45mm equiv.
—
17-70mm F/2.8 Di III-A VC RXD
17-70mm / F2.8
26-105mm equiv.
—
Which to choose
When the 30mm F1.4 DC DN suits you better
- Brightness2.0 stops brighter — better in low light and blurs the background more
- Weight255g lighter, so easier to carry
When the 17-70mm F/2.8 Di III-A VC RXD suits you better
- 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
- 30mm F1.4 DC DN73.6mm long × 64.8mm diameter
- 17-70mm F/2.8 Di III-A VC RXD119.6mm long × 74.6mm diameter
Specifications compared
| Specification | Sigma 30mm F1.4 DC DN | Tamron 17-70mm F/2.8 Di III-A VC RXD | Difference |
|---|---|---|---|
| Focal length (wide) | 30mm | 17mm | +13mm |
| Focal length (tele) | 30mm | 70mm | −40mm |
| Max aperture (wide) | F1.4 | F2.8 | 2.0 stops brighter |
| Max aperture (tele) | F1.4 | F2.8 | 2.0 stops brighter |
| Min focus distance | — | 19cm | No data |
| Weight | 275g | 530g | −255g |
| Length | 73.6mm | 119.6mm | −46mm |
| Diameter | 64.8mm | 74.6mm | −9.8mm |
| Filter size | 52mm | 67mm | −15mm |
| Released | 2022 | 2022 | — |
| Stabilization | No | Yes | No |
| Weather sealing | Yes | Yes | — |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as 30mm F1.4 DC DN relative to 17-70mm F/2.8 Di III-A VC RXD.The highlighted cell is the better side for that specification.
Check prices
30mm F1.4 DC DN
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17-70mm F/2.8 Di III-A VC RXD
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30mm F1.4 DC DN in detail17-70mm F/2.8 Di III-A VC RXD in detailAll X Mount lenses