Fujifilm XF 10-24mm f/4 R OIS vs Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X)
The bottom line
Similar coverage, different speed: the Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X) opens to f/2.8 versus the Fujifilm XF 10-24mm f/4 R OIS's f/4 — more light and shallower background blur. It comes down to how much you value that extra brightness.
Choose the Fujifilm XF 10-24mm f/4 R OIS if…
- ✓You need more reach — it goes to 24mm vs 18mm for distant subjects, wildlife and sport.
- ✓You shoot handheld or on an unstabilised body — it has optical stabilisation, the other doesn't.
Choose the Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X) if…
- ✓You want more light and background blur — f/2.8 is faster than f/4, better for low light and subject separation.
- ✓You value portability — at 260g (9.2 oz) it's lighter than the 385g (13.6 oz) alternative for travel and all-day carry.
- ✓You like close-focus work — 0.28x magnification vs 0.1x.
- ✓You work outdoors — it's weather-sealed against dust and moisture; the other isn't.
Where they differ
- ›Aperture: the Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X) opens to f/2.8 vs the Fujifilm XF 10-24mm f/4 R OIS's f/4 — more light and shallower depth-of-field.
- ›Focal range: Fujifilm XF 10-24mm f/4 R OIS is 10-24mm, Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X) is 10-18mm — different framing and reach.
- ›Stabilisation: only the Fujifilm XF 10-24mm f/4 R OIS has optical stabilisation — steadier handheld shots, especially on bodies without IBIS.
- ›Weight: the Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X) is 260g (9.2 oz) vs 385g (13.6 oz) — you'll feel the difference handheld.
- ›Durability: the Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X) is weather-sealed; the other isn't.
Frequently asked
Is the Fujifilm XF 10-24mm f/4 R OIS or the Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X) better?
Similar coverage, different speed: the Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X) opens to f/2.8 versus the Fujifilm XF 10-24mm f/4 R OIS's f/4 — more light and shallower background blur. It comes down to how much you value that extra brightness.
Who should choose the Fujifilm XF 10-24mm f/4 R OIS?
Choose the Fujifilm XF 10-24mm f/4 R OIS if you need more reach — it goes to 24mm vs 18mm for distant subjects, wildlife and sport. Choose it if you shoot handheld or on an unstabilised body — it has optical stabilisation, the other doesn't.
Who should choose the Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X)?
Choose the Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X) if you want more light and background blur — f/2.8 is faster than f/4, better for low light and subject separation. Choose it if you value portability — at 260g (9.2 oz) it's lighter than the 385g (13.6 oz) alternative for travel and all-day carry. Choose it if you like close-focus work — 0.28x magnification vs 0.1x. Choose it if you work outdoors — it's weather-sealed against dust and moisture; the other isn't.
What is the main difference between the Fujifilm XF 10-24mm f/4 R OIS and the Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X)?
Aperture: the Sigma 10-18mm f/2.8 DC DN Contemporary (Fuji X) opens to f/2.8 vs the Fujifilm XF 10-24mm f/4 R OIS's f/4 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 10-24mm | 10-18mm |
| Lens Type | Zoom | Zoom |
| Optical Elements | 14 | 13 |
| Optical Groups | 10 | 10 |
| Aperture & Iris | ||
| Maximum Aperture | f/4 | f/2.8 |
| Minimum Aperture | f/22 | f/22 |
| Aperture Blades | 7 | 9 |
| Rounded Aperture | No | Yes |
| Coverage & Angle | ||
| Format Coverage | APS-C | APS-C |
| Lens Mount | Fujifilm X | Fujifilm X |
| Angle of View | 110° – 61° | 110° – 76° |
| 35mm Equivalent | 15-37mm | 15-27mm |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | Stepping | HLA |
| Focus Limiter | No | No |
| AF/MF Switch | No | Yes |
| Min Focus Distance | 24 cm | 12 cm |
| Max Magnification | 0.1x | 0.28x |
| Stabilization & Video | ||
| Optical Stabilization | Yes | No |
| Aperture Ring | Yes | Yes |
| Declickable Aperture | No | Yes |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $749 | $699 |
| Filter Size | 72mm | 67mm |
| Diameter | 78mm | 67.2mm |
| Length | 87mm | 73.3mm |
| Weight | 385g (13.6 oz) | 260g (9.2 oz) |
| Weather Sealed | No | Yes |
| Tripod Collar | No | No |
