Sigma 10-18mm f/2.8 DC DN Contemporary vs Sigma 15mm F1.4 DC Contemporary
The bottom line
The Sigma 10-18mm f/2.8 DC DN Contemporary is a zoom (10-18mm) and the Sigma 15mm F1.4 DC Contemporary is a 15mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter (f/1.4 vs f/2.8) and lighter to carry. Choose flexibility or a fast single focal length.
Choose the Sigma 10-18mm f/2.8 DC DN Contemporary if…
- ✓You shoot wide — it starts at 10mm vs 15mm for landscapes, interiors and architecture.
- ✓You want one-lens flexibility — a 10-18mm zoom covers what the fixed 15mm can't reframe.
- ✓You like close-focus work — 0.28x magnification vs 0.15x.
Choose the Sigma 15mm F1.4 DC Contemporary if…
- ✓You want more light and background blur — f/1.4 is faster than f/2.8, better for low light and subject separation.
- ✓You prefer a fast, compact single focal length — a 15mm prime over a zoom.
Where they differ
- ›Aperture: the Sigma 15mm F1.4 DC Contemporary opens to f/1.4 vs the Sigma 10-18mm f/2.8 DC DN Contemporary's f/2.8 — more light and shallower depth-of-field.
- ›Focal range: Sigma 10-18mm f/2.8 DC DN Contemporary is 10-18mm, Sigma 15mm F1.4 DC Contemporary is 15mm — different framing and reach.
- ›Type: the Sigma 10-18mm f/2.8 DC DN Contemporary is a zoom (flexible framing), the Sigma 15mm F1.4 DC Contemporary a prime (one focal length, usually brighter and lighter).
- ›Price: the Sigma 15mm F1.4 DC Contemporary is $579, $120 under the Sigma 10-18mm f/2.8 DC DN Contemporary.
Frequently asked
Is the Sigma 10-18mm f/2.8 DC DN Contemporary or the Sigma 15mm F1.4 DC Contemporary better?
The Sigma 10-18mm f/2.8 DC DN Contemporary is a zoom (10-18mm) and the Sigma 15mm F1.4 DC Contemporary is a 15mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter (f/1.4 vs f/2.8) and lighter to carry. Choose flexibility or a fast single focal length.
Who should choose the Sigma 10-18mm f/2.8 DC DN Contemporary?
Choose the Sigma 10-18mm f/2.8 DC DN Contemporary if you shoot wide — it starts at 10mm vs 15mm for landscapes, interiors and architecture. Choose it if you want one-lens flexibility — a 10-18mm zoom covers what the fixed 15mm can't reframe. Choose it if you like close-focus work — 0.28x magnification vs 0.15x.
Who should choose the Sigma 15mm F1.4 DC Contemporary?
Choose the Sigma 15mm F1.4 DC Contemporary if you want more light and background blur — f/1.4 is faster than f/2.8, better for low light and subject separation. Choose it if you prefer a fast, compact single focal length — a 15mm prime over a zoom.
What is the main difference between the Sigma 10-18mm f/2.8 DC DN Contemporary and the Sigma 15mm F1.4 DC Contemporary?
Aperture: the Sigma 15mm F1.4 DC Contemporary opens to f/1.4 vs the Sigma 10-18mm f/2.8 DC DN Contemporary's f/2.8 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 10-18mm | 15mm |
| Lens Type | Zoom | Prime |
| Optical Elements | 13 | 13 |
| Optical Groups | 10 | 11 |
| Aperture & Iris | ||
| Maximum Aperture | f/2.8 | f/1.4 |
| Minimum Aperture | f/22 | f/16 |
| Aperture Blades | 9 | 9 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | APS-C | APS-C |
| Lens Mount | Sony E | Sony E |
| Angle of View | 110° – 76° | 82.9° |
| 35mm Equivalent | 15-27mm | 23-23mm |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | HLA | HLA |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 12 cm | 18 cm |
| Max Magnification | 0.28x | 0.15x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | Yes | Yes |
| Declickable Aperture | Yes | Yes |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $699 | $579 |
| Filter Size | 67mm | 58mm |
| Diameter | 67.2mm | 64mm |
| Length | 73.3mm | 65mm |
| Weight | 260g (9.2 oz) | 220g (7.8 oz) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | No |
