What actually matters when buying
- Synchronization — both lenses must expose at the exact same instant for moving subjects
- Fixed interocular spacing that's close to natural human eye distance
- Output format support — clean SBS or MPO export saves hours of post-processing
Budget tier: smartphone attachments
Clip-on dual-lens attachments turn an existing phone into a passable stereo camera for social content and casual shooting. Image quality trails dedicated hardware, but the barrier to entry is close to zero.
Mid tier: dual-fisheye spatial lenses
Lenses like the Canon RF Dual Fisheye sit on a full-frame body and capture two 180° fisheye circles in one exposure — exactly what Apple Vision Pro's spatial video format expects.
This tier is the sweet spot for creators publishing to Vision Pro or VR180-compatible platforms without building a custom rig.
Professional tier: synchronized twin rigs
Genlock-synced twin-camera bars remain the standard for stereoscopic film and broadcast, where perfect frame-accurate sync across two full sensors is non-negotiable.
Expect a steeper learning curve around convergence and interaxial adjustment, but unmatched image quality and control.
Bottom line
Casual shooters should start with a phone attachment or the single-camera slide technique. Anyone publishing spatial video for Vision Pro or VR180 should budget for a dual-fisheye lens. Professional productions still belong on a synced twin rig.
See it in action at 3dstreaming.org