Review Canon RF

Canon RF-S 10-18mm f/4.5-6.3 IS STM Review

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

10-18mm f/4.5-6.3 · RF Mount

12 min read

Pros & Cons

Pros

  • Lightweight and compact design, making it easy to carry and travel with.
  • Good image quality for landscapes and architecture, especially for a budget lens.
  • Offers a wide-angle view at 10mm, allowing for expansive landscape photography.
  • Image stabilization is helpful for handheld shooting, enhancing the usability in various conditions.
  • Affordable price point, making it accessible for beginner photographers.

Cons

  • Variable aperture of f/4.5-6.3 can limit performance in low light situations.
  • Some users report noticeable vignetting at the edges, which can affect image quality.
  • Slow autofocus performance compared to faster primes, which may be a drawback for action or wildlife photography.
  • Build quality may feel less robust due to the plastic mount.

Verdict

Overall, the Canon RF-S 10-18mm f/4.5-6.3 IS STM is appreciated for its lightweight design and decent image quality, making it a popular choice for beginner photographers focused on landscapes. However, its slower aperture and some autofocus limitations may lead photographers to consider faster alternatives for low light and moving subjects.

Specifications

Focal Length 10-18mm
Max Aperture f/4.5-6.3
Min Aperture f/22-32
Mount RF
OIS Yes
AF Motor STM
Weather Sealed No

Frequently Asked Questions

Is the Canon RF-S 10-18mm f/4.5-6.3 IS STM compatible with full-frame Canon RF cameras?

The lens is designed for Canon's APS-C (crop-sensor) EOS R bodies (e.g., R50, R10, R7). While it can physically mount on full-frame RF cameras, these will operate in a cropped mode that substantially reduces resolution and field of view, making it less practical for full-frame use.

How does the image stabilization system perform in real-world use?

Canon claims up to 4 stops of stabilization, and real-world results are impressive, particularly for handheld landscapes and video. IS helps ensure sharp results at slower shutter speeds-useful when the variable aperture forces low-light compromises.

Is the lens weather-sealed?

No, the RF-S 10-18mm is not weather-sealed. While it's well built for its price point, users should avoid heavy rain, dust, or saltwater environments unless additional protection is used.

Does it accept standard filters and what size?

Yes, the lens features a 49mm front filter thread, making it straightforward to use with polarizers, ND filters, or UV filters. The compact filter size further reduces cost and bulk.

How does this lens compare to the older EF-S 10-18mm STM?

Performance is broadly similar, with the RF-S version offering equivalent optical performance but improved image stabilization and a noticeably more compact, modern RF-mount design. The user experience on mirrorless bodies is superior due to direct communication and updates.

Can the RF-S 10-18mm be used for astrophotography?

It can be used for basic wide astrophotography due to its 10mm field of view, but the slow maximum aperture means you'll need higher ISOs or longer exposures. If low-light performance is critical, faster (lower f-number) wide primes or full-frame lenses will outperform it.

Compatible Cameras

Camera bodies that work with this lens

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