Laowa's ultra-wide zero-distortion lens for Canon RF APS-C — a 14mm equivalent with near-zero distortion.
The Laowa 9mm f/2.9 Zero-D is an ultra-wide rectilinear prime for Canon RF-mount APS-C cameras, providing a 14mm equivalent field of view with virtually zero distortion. The Zero-D designation is Laowa's promise of distortion-free imaging at extreme wide angles — keeping straight lines straight where most ultra-wide lenses would produce noticeable barrel distortion.
Optical performance prioritises distortion correction — the near-zero distortion at 9mm on APS-C is the primary achievement. Sharpness is good in the centre and respectable in the corners when stopped down. The f/2.9 aperture is relatively fast for an ultra-wide, useful for astrophotography and low-light interiors. Vignetting is present wide open but correctable.
Canon RF mount, APS-C coverage. Filter thread is 49mm — impressively small for a 9mm lens, allowing standard filter use. Weight is approximately 215 grams — very compact. Build quality is solid metal construction. Manual focus only — no autofocus or electronic communication. The compact size makes it an excellent travel ultra-wide.
Available on the used market at moderate prices. Check for smooth focus ring and clean front element. An excellent ultra-wide for Canon R10, R50, and R100 owners who want dramatic wide-angle perspectives for architecture, interiors, and landscape. The zero-distortion design is particularly valuable for real estate photography.