Tamron 17-28mm F/2.8 Di III RXDvsTokina FíRIN 20mm F2 FE AF
17-28mm F/2.8 Di III RXD
17-28mm / F2.8
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FíRIN 20mm F2 FE AF
20mm / F2
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Which to choose
When the 17-28mm F/2.8 Di III RXD suits you better
- Close focusFocuses as close as 19cm
- Zoom rangeCovers 17-28mm in a single lens
- Weather sealingHas weather sealing
When the FíRIN 20mm F2 FE AF suits you better
- Brightness1.0 stops brighter — better in low light and blurs the background more
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
- 17-28mm F/2.8 Di III RXD99mm long × 73mm diameter
- FíRIN 20mm F2 FE AF81.5mm long × 73mm diameter
Specifications compared
| Specification | Tamron 17-28mm F/2.8 Di III RXD | Tokina FíRIN 20mm F2 FE AF | Difference |
|---|---|---|---|
| Focal length (wide) | 17mm | 20mm | −3mm |
| Focal length (tele) | 28mm | 20mm | +8mm |
| Max aperture (wide) | F2.8 | F2 | 1.0 stops darker |
| Max aperture (tele) | F2.8 | F2 | 1.0 stops darker |
| Min aperture | F22 | F22 | — |
| Min focus distance | 19cm | 28cm | −0.09m |
| Max magnification | 0.19× | 0.10× | +0.09x |
| Aperture blades | 9blades | 9blades | — |
| Weight | 420g | 465g | −45g |
| Length | 99mm | 81.5mm | +17.5mm |
| Diameter | 73mm | 73mm | — |
| Filter size | 67mm | 62mm | +5mm |
| Released | 2019 | 2018 | +1year |
| Stabilization | No | No | — |
| Weather sealing | Yes | No | Yes |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as 17-28mm F/2.8 Di III RXD relative to FíRIN 20mm F2 FE AF.The highlighted cell is the better side for that specification.
Check prices
17-28mm F/2.8 Di III RXD
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FíRIN 20mm F2 FE AF
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17-28mm F/2.8 Di III RXD in detailFíRIN 20mm F2 FE AF in detailAll E-mount lenses