Lens Comparison
Canon RF-S 18-45mm f/4.5-6.3 IS STM vs Sigma 30mm f/1.4 DC DN Contemporary (Canon RF)
Key Differences
- Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) has a better maximum aperture (f/1.4 vs f/4.5).
- Canon RF-S 18-45mm f/4.5-6.3 IS STM has a better weight (149g (5.3 oz) vs 265g (9.3 oz)).
- Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) has a better aperture blades (9 vs 7).
- Canon RF-S 18-45mm f/4.5-6.3 IS STM has a better max magnification (0.29x vs 0.1x).
- Canon RF-S 18-45mm f/4.5-6.3 IS STM has a better min focus distance (25 cm vs 30 cm).
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 18-45mm | 30mm |
| Lens Type | Zoom | Prime |
| Optical Elements | 11 | 9 |
| Optical Groups | 9 | 6 |
| Aperture & Iris | ||
| Maximum Aperture | f/4.5 | f/1.4 |
| Minimum Aperture | f/22 | f/16 |
| Aperture Blades | 7 | 9 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | APS-C | APS-C |
| Lens Mount | Canon RF | Canon RF |
| Angle of View | − | − |
| 35mm Equivalent | 29-72mm | 48-48mm |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | STM | HLA |
| Focus Limiter | No | No |
| AF/MF Switch | No | Yes |
| Min Focus Distance | 25 cm | 30 cm |
| Max Magnification | 0.29x | 0.1x |
| Stabilization & Video | ||
| Optical Stabilization | Yes | No |
| Aperture Ring | No | Yes |
| Declickable Aperture | No | Yes |
| Parfocal | No | No |
| Internal Zoom | Yes | No |
| General | ||
| Price (MSRP) | $299 | $349 |
| Filter Size | 49mm | 52mm |
| Diameter | 68.1mm | 64.8mm |
| Length | 44.8mm | 51.5mm |
| Weight | 149g (5.3 oz) | 265g (9.3 oz) |
| Weather Sealed | No | No |
| Tripod Collar | No | No |
