Samyang AF 12mm f/2 E vs Sigma 15mm F1.4 DC Contemporary
The bottom line
These cover different focal lengths — the Samyang AF 12mm f/2 E is 12mm, the Sigma 15mm F1.4 DC Contemporary is 15mm — so they're not really substitutes. Pick by the field of view you actually need: the Samyang AF 12mm f/2 E for wide-angle, the Sigma 15mm F1.4 DC Contemporary for wide-angle.
Choose the Sigma 15mm F1.4 DC Contemporary if…
- ✓You want more light and background blur — f/1.4 is faster than f/2, better for low light and subject separation.
- ✓You like close-focus work — 0.15x 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 15mm F1.4 DC Contemporary opens to f/1.4 vs the Samyang AF 12mm f/2 E's f/2 — more light and shallower depth-of-field.
- ›Focal range: Samyang AF 12mm f/2 E is 12mm, Sigma 15mm F1.4 DC Contemporary is 15mm — different framing and reach.
- ›Price: the Samyang AF 12mm f/2 E is $449, $130 under the Sigma 15mm F1.4 DC Contemporary.
- ›Durability: the Sigma 15mm F1.4 DC Contemporary is weather-sealed; the other isn't.
Frequently asked
Is the Samyang AF 12mm f/2 E or the Sigma 15mm F1.4 DC Contemporary better?
These cover different focal lengths — the Samyang AF 12mm f/2 E is 12mm, the Sigma 15mm F1.4 DC Contemporary is 15mm — so they're not really substitutes. Pick by the field of view you actually need: the Samyang AF 12mm f/2 E for wide-angle, the Sigma 15mm F1.4 DC Contemporary for wide-angle.
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, better for low light and subject separation. Choose it if you like close-focus work — 0.15x 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 Samyang AF 12mm f/2 E and the Sigma 15mm F1.4 DC Contemporary?
Aperture: the Sigma 15mm F1.4 DC Contemporary opens to f/1.4 vs the Samyang AF 12mm f/2 E's f/2 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 12mm | 15mm |
| Lens Type | Prime | Prime |
| Optical Elements | 10 | 13 |
| Optical Groups | 7 | 11 |
| Aperture & Iris | ||
| Maximum Aperture | f/2 | f/1.4 |
| Minimum Aperture | f/22 | f/16 |
| Aperture Blades | 7 | 9 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | APS-C |
| Lens Mount | Sony E | Sony E |
| Angle of View | 122° | 82.9° |
| 35mm Equivalent | − | 23-23mm |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | STM | HLA |
| Focus Limiter | No | No |
| AF/MF Switch | No | Yes |
| Min Focus Distance | 20 cm | 18 cm |
| Max Magnification | 0.1x | 0.15x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | Yes |
| Declickable Aperture | No | Yes |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $449 | $579 |
| Filter Size | 67mm | 58mm |
| Diameter | 71mm | 64mm |
| Length | 80.4mm | 65mm |
| Weight | 213g (7.5 oz) | 220g (7.8 oz) |
| Weather Sealed | No | Yes |
| Tripod Collar | No | No |
