N°88419 · Family detail
CanonWide·CANON RF mount

Canon RF-S 7.8mm F/4 STM Dual Lens

Specifications01

Focal length8mm
Max aperturef/4
TypeWide · Prime

Summary02

Canon RF-S 7.8mm f/4.0 STM is a prime ultrawide lens for APS-C (RF-S) Canon cameras, intended for landscapes and architecture. It has a fixed f/4 aperture and STM autofocus.

AI-assisted summary — verify against linked sources

Specifications from lesdeux

Where can this lens be adapted?

The Canon RF mount has a flange distance of 20 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work

  • Native lenses set the aperture, and often the focus, electronically. On a plain adapter they do not work. Use an electronic adapter made for this pair; for many pairs nobody makes one. Fully manual lenses are the exception.
  • RF-S lenses cover APS-C only.
  • Sony EAdapter · 2 mm

    The camera mount (46.1 mm) is narrower than the lens mount (54 mm). A large rear element can darken the corners.

  • Canon RFNative
  • Nikon ZAdapter · 4 mm
  • Fujifilm XAdapter · 2.3 mm
  • Canon EF-MAdapter · 2 mm

No plain adapter reaches infinity focus on: L-Mount, Micro Four Thirds, Fujifilm G (GFX), Canon EF, Nikon F.

Sources03

lesdeuxpiedsdehors.comVisit ↗

Other Mounts03

No alternate mounts are indexed for this family yet.