Canon RF 28-70mm f/2.8 IS STM
Sigma DG OS 70-300mm f/4-5.6 DG Macro
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 DG OS 70-300mm f/4-5.6 DG Macro
This Sigma 70-300mm lens is widely praised for its excellent value, delivering sharp images, good bokeh, and a useful macro function at a budget price. Many users note it's ideal for amateur photographers, though the autofocus can be slow and noisy, and image quality softens slightly at 300mm without a tripod. Overall, it's considered a fantastic performance-to-price winner for those not needing professional-grade telephoto capabilities.
Pros
- Excellent value for money
- Sharp image quality
- Good bokeh effect
- Useful macro function
- Solid build quality
Cons
- Slow autofocus in low light
- Noisy autofocus motor
- Softness at 300mm without tripod
- Rotating front element for polarizers
- Weighty for long hikes
Scores
Specifications
| Canon RF 28-70mm f/2.8 IS STM | Sigma DG OS 70-300mm f/4-5.6 DG Macro | |
|---|---|---|
| Optics | ||
| Type | zoom | telephoto |
| Focal Length Min | 28 mm | 70 mm |
| Focal Length Max | 70 mm | 300 mm |
| Elements | 14 | 14 |
| Groups | 11 | 10 |
| Aspherical Elements | 2★ | — |
| ED Elements | 2 | 3★ |
| Coating | Super Spectra Coating (SSC) | Super Multi-Layer Coated |
| Aperture | ||
| Max Aperture | f/2.8 | f/4 |
| Min Aperture | f/2.8 | 4-5.6 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | — | 9★ |
| Build | ||
| Mount | Canon RF | Nikon F |
| Format | full-frame | full-frame |
| Weather Sealed | ✓★ | — |
| Weight | 0.49 kg★ | 0.55 kg |
| Filter Thread | 67 mm | 58 mm |
| AF & Stabilization | ||
| AF Type | STM★ | Autofocus |
| Stabilization | ✓ | ✓ |
| Stabilization Stops | 5.5 stops★ | — |
| Focus | ||
| Min Focus Distance | 270 mm★ | 950 mm |
| Max Magnification | 0.24x | 1:2★ |
Pros & Cons
Canon RF 28-70mm f/2.8 IS STM
- Strong stabilization (98th percentile)98th %ile
- Strong aperture (88th percentile)88th %ile
- Strong bokeh (86th percentile)86th %ile
- Strong user sentiment (86th percentile)86th %ile
Sigma DG OS 70-300mm f/4-5.6 DG Macro
- Strong versatility (91st percentile)91st %ile
- Strong bokeh (83rd percentile)83rd %ile
- Strong social proof (81st percentile)81st %ile
- Strong stabilization (79th percentile)
Verdict
Scores 88 overall, wins 9 of 9 usage categories and 7 of 22 specs.