Canon RF7-14mm F2.8-3.5 L FISHEYE STMvsSigma 10-18mm F2.8 DC DN
RF7-14mm F2.8-3.5 L FISHEYE STM
7-14mm / F2.8-3.5
—
10-18mm F2.8 DC DN
10-18mm / F2.8
15-27mm equiv.
—
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 10-18mm F2.8 DC DN suits you better
- Weight206g 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
- 10-18mm F2.8 DC DN62mm long × 72.2mm diameter
Specifications compared
| Specification | Canon RF7-14mm F2.8-3.5 L FISHEYE STM | Sigma 10-18mm F2.8 DC DN | Difference |
|---|---|---|---|
| Focal length (wide) | 7mm | 10mm | −3mm |
| Focal length (tele) | 14mm | 18mm | −4mm |
| Max aperture (wide) | F2.8 | F2.8 | — |
| Max aperture (tele) | F3.5 | F2.8 | 0.6 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 | 270g | +206g |
| Length | 109.4mm | 62mm | +47.4mm |
| Diameter | 76.5mm | 72.2mm | +4.3mm |
| Filter size | — | 67mm | No data |
| Released | 2026 | 2024 | +2year |
| 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 10-18mm F2.8 DC DN.The highlighted cell is the better side for that specification.
Check prices
RF7-14mm F2.8-3.5 L FISHEYE STM
ADLinks to Amazon, B&H Photo, Adorama, KEH Camera, MPB, eBay are affiliate links. We may earn a commission if you buy through them, at no extra cost to you.Links marked “Search results” go to that retailer’s search page for this lens name.Check price and availability on the retailer’s own site.
10-18mm F2.8 DC DN
ADLinks to Amazon, B&H Photo, Adorama, KEH Camera, MPB, eBay are affiliate links. We may earn a commission if you buy through them, at no extra cost to you.Links marked “Search results” go to that retailer’s search page for this lens name.Check price and availability on the retailer’s own site.
RF7-14mm F2.8-3.5 L FISHEYE STM in detail10-18mm F2.8 DC DN in detailAll RF mount lenses