Canon RF-S 7.8mm f/4 STM Dual 7mm
A stereoscopic dual-lens design captures spatial video for Apple Vision Pro and Meta Quest 3, using an STM autofocus motor and a 60° field of view on APS-C bodies like the EOS R7. Its compact 130g build and f/4 constant aperture make it an accessible entry point into the Canon EOS VR System without heavy rigs. This lens is best for content creators experimenting with 3D vlogging and immersive video, not for traditional landscape or macro work.
Focal length 8mm
Aperture f/16
Mount Canon RF
Weight 130 g
af type STM
lens type fisheye
56 Overall Score
Price CA$545
Snapshot
Pros & Cons
Pros
- Strong build (93rd percentile) 93rd
- Strong macro (90th percentile) 90th
- Strong af (87th percentile) 87th
Cons
- Below average social proof (8th percentile)
- Below average bokeh (32nd percentile)
- Below average versatility (34th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Owner sentiment has held steady over time
Based on 2 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Fisheye |
| Focal Length Min | 8 |
| Focal Length Max | 8 |
| Elements | 9 |
| Groups | 7 |
| ED Elements | 2 |
| Coating | Super Spectra Coating |
Aperture
| Max Aperture | f/16 |
| Min Aperture | f/4 |
| Constant | Yes |
| Diaphragm Blades | 7 |
Build
| Mount | Canon RF |
| Format | APS-C |
| Weather Sealed | No |
| Weight | 0.1 kg / 0.3 lbs |
| Filter Thread | 58 |
AF & Stabilization
| AF Type | STM |
| Stabilization | No |
Focus
| Min Focus Distance | 150 |
| Max Magnification | 1:14 |
vs Competition
| Spec | Canon RF-S 7.8mm f/4 STM Dual 7mm | Nikon NIKKOR Z 17-28mm f/2.8 | Tamron Di III 28-75mm f/2.8 VXD G2 | Sigma Contemporary 10-18mm f/2.8 DC DN | Panasonic Leica DG Vario-Elmarit H-ES12060 | Sony FE SEL2070G |
|---|---|---|---|---|---|---|
| Focal Length | 8mm | 17-28mm | 28-75mm | 10-18mm | 12-60mm | 20-70mm |
| Max Aperture | f/16 | f/2.8 | f/2.8 | f/2.8 | f/2.8 | f/4 |
| Mount | Canon RF | Nikon Z | Sony E | Sony E | Micro Four Thirds | Sony E |
| Stabilization | false | false | false | false | true | false |
| Weather Sealed | false | true | true | true | true | true |
| Weight (g) | 130 | 450 | 540 | 260 | 320 | 488 |
| AF Type | STM | Stepping Motor | VXD | Autofocus | linear motor | Autofocus |
| Lens Type | fisheye | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Canon RF-S 7.8mm f/4 STM Dual 7mm | 87 | 32 | 92.7 | 90.3 | 54.9 | 45.8 | 33.6 | 8.1 | 38 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87 | 88.1 | 73.6 | 86.3 | 87 | 85.8 | 68.1 | 64.6 | 38 |
| Tamron Di III 28-75mm f/2.8 VXD G2 Compare | 54.6 | 88.1 | 67.2 | 87.3 | 87.8 | 85.8 | 78.2 | 83.1 | 38 |
| Sigma Contemporary 10-18mm f/2.8 DC DN Compare | 54.6 | 83.5 | 87.3 | 93.3 | 81.6 | 85.8 | 69.1 | 68.8 | 38 |
| Panasonic Leica DG Vario-Elmarit H-ES12060 Compare | 98 | 88.1 | 83.1 | 50.4 | 90.2 | 85.8 | 93.1 | 63.5 | 83.2 |
| Sony FE SEL2070G Compare | 54.6 | 80.2 | 70.8 | 51.1 | 93.1 | 69.9 | 84.2 | 91.7 | 38 |
Price
Value & Pricing
From CA$545
Amazon.ca 1 offer From CA$545
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
