Canon RF7-14mm F2.8-3.5 L FISHEYE STMvsSigma 12mm F1.4 DC
RF7-14mm F2.8-3.5 L FISHEYE STM
7-14mm / F2.8-3.5
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12mm F1.4 DC
12mm / F1.4
18mm equiv.
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Which to choose
When the RF7-14mm F2.8-3.5 L FISHEYE STM suits you better
- Zoom rangeCovers 7-14mm in a single lens
When the 12mm F1.4 DC suits you better
- Brightness2.0 stops brighter — better in low light and blurs the background more
- Weight226g lighter, so easier to carry
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
- RF7-14mm F2.8-3.5 L FISHEYE STM109.4mm long × 76.5mm diameter
- 12mm F1.4 DC67.4mm long × 69mm diameter
Specifications compared
| Specification | Canon RF7-14mm F2.8-3.5 L FISHEYE STM | Sigma 12mm F1.4 DC | Difference |
|---|---|---|---|
| Focal length (wide) | 7mm | 12mm | −5mm |
| Focal length (tele) | 14mm | 12mm | +2mm |
| Max aperture (wide) | F2.8 | F1.4 | 2.0 stops darker |
| Max aperture (tele) | F3.5 | F1.4 | 2.6 stops darker |
| Min aperture | F22 | — | No data |
| Min focus distance | 15cm | — | No data |
| Max magnification | 0.35× | — | No data |
| Aperture blades | 9blades | — | No data |
| Weight | 476g | 250g | +226g |
| Length | 109.4mm | 67.4mm | +42mm |
| Diameter | 76.5mm | 69mm | +7.5mm |
| Filter size | — | 62mm | No data |
| Released | 2026 | 2025 | +1year |
| Stabilization | No | No | — |
| Weather sealing | Yes | Yes | — |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as RF7-14mm F2.8-3.5 L FISHEYE STM relative to 12mm F1.4 DC.The highlighted cell is the better side for that specification.
Check prices
RF7-14mm F2.8-3.5 L FISHEYE STM
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12mm F1.4 DC
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RF7-14mm F2.8-3.5 L FISHEYE STM in detail12mm F1.4 DC in detailAll RF mount lenses