Canon RF 28-70mm f/2.8 IS STM
Sigma EX DG 8mm f/3.5 EX DG Circular Fisheye 8mm
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 EX DG 8mm f/3.5 EX DG Circular Fisheye 8mm
The Sigma 8mm f/3.5 EX DG Circular Fisheye lens is well-liked for its sharpness, color rendition, and unique circular fisheye effect. Users appreciate its ability to simplify handheld panoramic photography, though some note chromatic distortion and noise in dark corners. Compatibility with various Nikon bodies is generally good, but autofocus is not supported on entry-level DSLRs.
Pros
- Sharp image quality
- Unique circular fisheye effect
- Simplifies handheld panoramic photography
- Good color rendition
- Works with FTZ adapter on Z cameras
Cons
- Chromatic distortion (aurora) around image
- Noise in dark corners
- No autofocus on entry-level Nikon DSLRs
- Not a true full-frame lens (EX not FX)
- Requires manual focus on some bodies
Scores
Specifications
| Canon RF 28-70mm f/2.8 IS STM | Sigma EX DG 8mm f/3.5 EX DG Circular Fisheye 8mm | |
|---|---|---|
| Optics | ||
| Type | zoom | fisheye |
| Focal Length Min | 28 mm | 8 mm |
| Focal Length Max | 70 mm | 8 mm |
| Elements | 14 | 11 |
| Groups | 11 | 6 |
| Aspherical Elements | 2★ | — |
| ED Elements | 2★ | 1 |
| Coating | Super Spectra Coating (SSC) | Super Multi-Layer Coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/22 |
| Min Aperture | f/2.8 | f/3.5 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | — | 6★ |
| Build | ||
| Mount | Canon RF | Nikon F |
| Format | full-frame | full-frame |
| Weather Sealed | ✓★ | — |
| Weight | 0.49 kg | 0.40 kg★ |
| Filter Thread | 67 mm | — |
| AF & Stabilization | ||
| AF Type | STM★ | Autofocus (with Nikon Cameras That Have an Autofocus Motor) |
| Stabilization | ✓★ | ✗ |
| Stabilization Stops | 5.5 stops★ | — |
| Focus | ||
| Min Focus Distance | 270 mm | 135 mm★ |
| Max Magnification | 0.24x | 1:4.6★ |
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 EX DG 8mm f/3.5 EX DG Circular Fisheye 8mm
- Strong macro (88th percentile)88th %ile
- Strong social proof (71st percentile)
- Below average bokeh (6th percentile)6th %ile
- Below average aperture (22nd percentile)
- Below average versatility (33rd percentile)
- Below average stabilization (34th percentile)
Pricing
Verdict
Scores 88 overall, wins 9 of 9 usage categories and 6 of 22 specs.
