Descripción
APS-C Dual Lens for Stereoscopic 3D and VR Capture
Overview
The Canon RF-S 7.8mm f/4 STM Dual is not one lens but two, side by side on a single RF mount, separated by an 11.8mm baseline. Each records its own 63° image onto one half of an APS-C sensor, and the pair becomes a stereoscopic 3D frame — the format VR headsets read directly.
Key features
Two lenses, one mount
- 11.8mm baseline: the distance between the two optical axes, which is what creates the depth separation.
- 63° field of view, horizontal, vertical and diagonal — square coverage per eye.
- One camera body: no rig, no synchronisation, no matching two lenses to each other.
Optical construction
- 9 elements in 7 groups, with two UD elements.
- 7-blade aperture, f/4 to f/16.
- 0.15 m minimum focus distance, 0.07x maximum magnification.
Handling
- Combined focus and control ring, with STM autofocus.
- 58 mm filter thread, 130 g.
Specifications
- Mount: Canon RF (RF-S, APS-C)
- Type: dual lens, 11.8mm baseline
- Focal length: 7.8mm per lens
- Maximum aperture: f/4
- Minimum aperture: f/16
- Angle of view: 63° horizontal, 63° vertical, 63° diagonal
- Lens construction: 9 elements in 7 groups
- Special optics: 2x UD
- Diaphragm blades: 7
- Closest focusing distance: 0.15 m
- Maximum magnification: 0.07x
- Autofocus actuator: STM
- Rings: combined focus / control
- Coatings: Super Spectra
- Filter diameter: 58 mm
- Dust and moisture resistance: no
- Dimensions: 69.2 x 41.5 mm
- Weight: 130 g
What it is good for
- VR and 3D content: stereoscopic capture in one pass, for headset playback.
- Immersive documentary: spaces and events recorded with real depth rather than flat.
- Anyone testing 3D without a rig: the cheapest way into stereoscopic capture on an RF body.

