Lens Comparison
Sigma 100-400mm f/5-6.3 DG DN OS Contemporary vs Tamron 17-28mm F/2.8 Di III RXD
Key Differences
- Tamron 17-28mm F/2.8 Di III RXD has a better min focus distance (19 cm vs 120 cm).
- Tamron 17-28mm F/2.8 Di III RXD has a better weight (420g (14.8 oz) vs 1140g (2.51 lb)).
- Tamron 17-28mm F/2.8 Di III RXD has a better length (99mm vs 196.6mm).
- Tamron 17-28mm F/2.8 Di III RXD has a better maximum aperture (f/2.8 vs f/5).
- Sigma 100-400mm f/5-6.3 DG DN OS Contemporary has a better price (msrp) ($759 vs $799).
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 100-400mm | 17-28mm |
| Lens Type | Zoom | Zoom |
| Optical Elements | − | 13 |
| Optical Groups | − | 12 |
| Aperture & Iris | ||
| Maximum Aperture | f/5 | f/2.8 |
| Minimum Aperture | f/32 | f/22 |
| Aperture Blades | 9 | 9 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | Full-Frame |
| Lens Mount | Sony E | Sony E |
| Angle of View | − | − |
| 35mm Equivalent | − | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | HLA | RXD |
| Focus Limiter | Yes | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 120 cm | 19 cm |
| Max Magnification | 0.24x | 0.19x |
| Stabilization & Video | ||
| Optical Stabilization | Yes | No |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $759 | $799 |
| Filter Size | 67mm | 67mm |
| Diameter | 86mm | 73mm |
| Length | 196.6mm | 99mm |
| Weight | 1140g (2.51 lb) | 420g (14.8 oz) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | No |
