Canon RF-S7.8mm F4 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.
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实测数据
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-S7.8mm F4 STM Dual 7mm | Tamron Di III VC VXD 28-300mm f/4-7.1 | Sigma Contemporary 18-50mm f/2.8 DC DN | Nikon NIKKOR Z 17-28mm f/2.8 | Sony E PZ 16-50mm f/3.5-5.6 OSS | Panasonic LUMIX S S-E100 |
|---|---|---|---|---|---|---|
| Focal Length | 8mm | 28-300mm | 18-50mm | 17-28mm | 16-50mm | 100mm |
| Max Aperture | f/16 | f/4 | f/2.8 | f/2.8 | f/5.6 | f/2.8 |
| Mount | Canon RF | Sony E | Sony E | Nikon Z | Sony E | L-Mount |
| Stabilization | false | true | false | false | true | false |
| Weather Sealed | false | true | true | true | true | true |
| Weight (g) | 130 | 590 | 290 | 450 | 107 | 298 |
| AF Type | STM | VXD linear motor | stepping motor | Stepping Motor | Autofocus | Dual Phase Linear Motor |
| Lens Type | fisheye | zoom | zoom | zoom | zoom | macro |
| Compare | Compare | Compare | Compare | Compare |
| 产品 | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | 用户口碑 | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Canon RF-S7.8mm F4 STM Dual 7mm | 87.2 | 28 | 93.7 | 88.6 | 59.5 | 40.1 | 33.7 | 8.7 | 36.8 |
| Tamron Di III VC VXD 28-300mm f/4-7.1 Compare | 98.1 | 77.4 | 65.3 | 85 | 96.8 | 65.7 | 97.8 | 55.7 | 82.5 |
| Sigma Contemporary 18-50mm f/2.8 DC DN Compare | 87.2 | 81.5 | 86.7 | 90.8 | 82.5 | 83.6 | 78.5 | 89.9 | 36.8 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87.2 | 86.7 | 76 | 85 | 88.4 | 83.6 | 68.1 | 70.2 | 36.8 |
| Sony E PZ 16-50mm f/3.5-5.6 OSS Compare | 53.6 | 74.9 | 98.6 | 43.8 | 68.7 | 77 | 83.2 | 81.1 | 93.5 |
| Panasonic LUMIX S S-E100 Compare | 98.1 | 86.7 | 86.5 | 81.3 | 83.6 | 83.6 | 33.7 | 65.7 | 36.8 |