Canon RF 28-70mm f/2.8 IS STM
Sigma Contemporary 10-18mm f/2.8 DC DN
What Buyers Say
Canon RF 28-70mm f/2.8 IS STM
The Canon RF 24-70mm f/2.8L IS USM lens receives overwhelmingly positive feedback for its sharpness, fast autofocus, and lightweight design. Users appreciate it as a versatile upgrade from kit lenses, especially for mirrorless cameras like the R7 and R5 Mark II. A single negative review is due to a delivery issue, not product quality.
Pros
- Sharp image quality
- Fast and accurate autofocus
- Lightweight and compact design
- Great value for the price
- Versatile for various settings
Cons
- Possible delivery mismanagement
Sigma Contemporary 10-18mm f/2.8 DC DN
The Sigma 10-18mm f/2.8 DC DN Contemporary lens is highly praised for its compact, lightweight design and sharp image quality, making it an excellent choice for travel and real estate photography on APS-C cameras. Users appreciate the fast f/2.8 aperture for low-light performance and pleasing background blur, though some note the lack of in-lens stabilization and the need for post-production correction of distortion and vignetting on certain camera systems.
Pros
- Compact and lightweight design
- Sharp image quality across frame
- Fast f/2.8 constant aperture
- Excellent for travel and landscapes
- Good low-light performance
Cons
- No in-lens image stabilization
- Distortion and vignetting need post-production correction
- Lacks aperture ring on some versions
- No USB dock for firmware updates
- In-camera focus stacking not supported on Canon R7
Scores
Specifications
| Canon RF 28-70mm f/2.8 IS STM | Sigma Contemporary 10-18mm f/2.8 DC DN | |
|---|---|---|
| Optics | ||
| Type | zoom | zoom |
| Focal Length Min | 28 mm | 10 mm |
| Focal Length Max | 70 mm | 18 mm |
| Elements | 14 | 13 |
| Groups | 11 | 10 |
| Aspherical Elements | 2★ | 1 |
| ED Elements | 2 | 4★ |
| Coating | Super Spectra Coating (SSC) | Super Multi-Layer Coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/2.8 |
| Min Aperture | f/2.8 | f/2.8 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | — | 7★ |
| Build | ||
| Mount | Canon RF | Sony E |
| Format | full-frame★ | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.49 kg | 0.26 kg★ |
| Filter Thread | 67 mm | 67 mm |
| AF & Stabilization | ||
| AF Type | STM★ | Autofocus |
| Stabilization | ✓★ | ✗ |
| Stabilization Stops | 5.5 stops★ | — |
| Focus | ||
| Min Focus Distance | 270 mm | 117 mm★ |
| Max Magnification | 0.24x | 1:4★ |
Pros & Cons
Canon RF 28-70mm f/2.8 IS STM
- Strong stabilization (98th percentile)98th %ile
- Strong aperture (88th percentile)88th %ile
- Strong user sentiment (88th percentile)88th %ile
- Strong bokeh (87th percentile)87th %ile
Sigma Contemporary 10-18mm f/2.8 DC DN
- Strong social proof (94th percentile)94th %ile
- Strong macro (90th percentile)90th %ile
- Strong aperture (88th percentile)88th %ile
- Strong build (87th percentile)87th %ile
- Below average stabilization (34th percentile)
Pricing
Sigma Contemporary 10-18mm f/2.8 DC DN offers 2.2x better value for money
Verdict
Scores 94 overall, wins 5 of 9 usage categories and 5 of 22 specs.
