Canon RF-S 7.8mm f/4 STM Dual
Canon Canon RF Mount

Canon RF-S 7.8mm f/4 STM Dual

By Camera Reviews Editorial Team ยท Last updated February 18, 2026

7.8 4

Focal Length
7.8
Max Aperture
4
Weight
131g
Filter Size
58mm

Full Specifications

Focal Length 7.8
Maximum Aperture 4
Lens Mount Canon RF
Optical Stabilization No
Autofocus Motor STM
Filter Size 58mm
Minimum Focus Distance 0.15m
Weight 131g
Dimensions 68.6 x 40.6 mm
Weather Sealed No
Optical Elements 2 elements

What Users Think

Pros

  • Compact and lightweight design, ideal for travel and street photography.
  • Dual fisheye capability for unique spatial video and creative photography.
  • Good build quality, feeling sturdy and reliable in use.
  • Compatible with Canon's R-series cameras, leveraging advanced imaging technologies.
  • Capable of producing striking 3D effects when shooting in spatial video mode.
  • Good image sharpness in the center, adding to its utility for landscape photography.
  • Innovative design allows for easy capturing of immersive content.

Cons

  • Limited versatility due to its specific dual-lens design, less effective for conventional photography.
  • Distortion characteristics may not be suitable for all shooting scenarios.
  • Higher price point compared to standard lenses offering broader functionalities.
  • May not meet the expectations of photographers looking for traditional lens performance.
  • Requires specific adaptations or expertise to fully utilize its unique capabilities.

Community Verdict

Overall, the Canon RF-S 7.8mm f/4 STM Dual lens is well-received for its innovative design and effectiveness in specialized scenarios like spatial video. However, its limitations in versatility and higher cost compared to more traditional options may deter some potential users.

"{'text': 'It creates two side by side circular fisheye projections.', 'context': "Comment by u/gearcollector in a discussion about the lens's capabilities."}"

- Reddit user

"{'text': "I'm totally stoked! I'm really interested in starting to film spatial video and Canon has a really cool lens.", 'context': "Comment by u/Exact-Albatross-6798 expressing excitement about the lens's specific applications."}"

- Reddit user

"{'text': "Just guessing since I've never used this lens but I'm betting it creates 1 image by overlaying two image circles.", 'context': "Comment by u/18-morgan-78 providing insight on the lens's functionality."}"

- Reddit user

Want the Full Story?

Read our comprehensive review covering optical quality, sharpness, bokeh, autofocus performance, build quality, and more.

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Pairs Well With

Camera bodies compatible with the Canon RF mount

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