Canon RF 16mm f/2.8 STM vs Sigma 30mm f/1.4 DC DN Contemporary (Canon RF)
The bottom line
These cover different focal lengths — the Canon RF 16mm f/2.8 STM is 16mm, the Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) is 30mm — so they're not really substitutes. Pick by the field of view you actually need: the Canon RF 16mm f/2.8 STM for wide-angle, the Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) for standard.
Choose the Canon RF 16mm f/2.8 STM if…
- ✓You shoot wide — it starts at 16mm vs 30mm for landscapes, interiors and architecture.
- ✓You value portability — at 165g (5.8 oz) it's lighter than the 265g (9.3 oz) alternative for travel and all-day carry.
- ✓You like close-focus work — 0.26x magnification vs 0.1x.
Choose the Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) 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 need more reach — it goes to 30mm vs 16mm for distant subjects, wildlife and sport.
Where they differ
- ›Aperture: the Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) opens to f/1.4 vs the Canon RF 16mm f/2.8 STM's f/2.8 — more light and shallower depth-of-field.
- ›Focal range: Canon RF 16mm f/2.8 STM is 16mm, Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) is 30mm — different framing and reach.
- ›Weight: the Canon RF 16mm f/2.8 STM is 165g (5.8 oz) vs 265g (9.3 oz) — you'll feel the difference handheld.
Frequently asked
Is the Canon RF 16mm f/2.8 STM or the Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) better?
These cover different focal lengths — the Canon RF 16mm f/2.8 STM is 16mm, the Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) is 30mm — so they're not really substitutes. Pick by the field of view you actually need: the Canon RF 16mm f/2.8 STM for wide-angle, the Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) for standard.
Who should choose the Canon RF 16mm f/2.8 STM?
Choose the Canon RF 16mm f/2.8 STM if you shoot wide — it starts at 16mm vs 30mm for landscapes, interiors and architecture. Choose it if you value portability — at 165g (5.8 oz) it's lighter than the 265g (9.3 oz) alternative for travel and all-day carry. Choose it if you like close-focus work — 0.26x magnification vs 0.1x.
Who should choose the Sigma 30mm f/1.4 DC DN Contemporary (Canon RF)?
Choose the Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) 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 need more reach — it goes to 30mm vs 16mm for distant subjects, wildlife and sport.
What is the main difference between the Canon RF 16mm f/2.8 STM and the Sigma 30mm f/1.4 DC DN Contemporary (Canon RF)?
Aperture: the Sigma 30mm f/1.4 DC DN Contemporary (Canon RF) opens to f/1.4 vs the Canon RF 16mm f/2.8 STM's f/2.8 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 16mm | 30mm |
| Lens Type | Prime | Prime |
| Optical Elements | 10 | 9 |
| Optical Groups | 9 | 6 |
| Aperture & Iris | ||
| Maximum Aperture | f/2.8 | f/1.4 |
| Minimum Aperture | f/22 | f/16 |
| Aperture Blades | 7 | 9 |
| Rounded Aperture | No | Yes |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | APS-C |
| Lens Mount | Canon RF | Canon RF |
| Angle of View | 107° | 51° |
| 35mm Equivalent | − | 48-48mm |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | STM | HLA |
| Focus Limiter | No | No |
| AF/MF Switch | No | Yes |
| Min Focus Distance | 13 cm | 30 cm |
| Max Magnification | 0.26x | 0.1x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | Yes |
| Declickable Aperture | No | Yes |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $299 | $349 |
| Filter Size | 43mm | 52mm |
| Diameter | 69.2mm | 64.8mm |
| Length | 36.4mm | 51.5mm |
| Weight | 165g (5.8 oz) | 265g (9.3 oz) |
| Weather Sealed | No | No |
| Tripod Collar | No | No |
