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Canon EF-S 10-18mm f/4.5-5.6 IS STM
on the Canon EOS 90D

Native fit

This lens mounts directly on this camera.

Connection
No adapter needed
Sensor coverage
Covers the APS-C sensor · 1.6× field of view
Equivalent view
16–28.8mm compared with full frame

Focus and operation

Native electronic connection. Check model-specific feature support in the manufacturer references.

  • The sensor changes the angle of view. The lens’s actual focal length and f-number do not change.

Based on the manufacturer's documentation, not a test of this exact pair. Autofocus modes, stabilization, burst rate, and video support can still depend on firmware and settings.

Feature by feature

How this research works

For this pair we went past the mount check and looked up specific functions in the manufacturer's manuals. Each finding links to the passage it came from.

Native APS-C ultra-wide pairing with separate viewfinder and Live View AF choices, camera aperture control and switch-enabled optical IS.

Connection
Direct mount
What was checked
Direct-mounted still photography; viewfinder versus Live View AF, aperture and exposure controls, format and applicable lens switches. No movie, extender or measured-performance findings.
Sources checked

Next source check due .

Not covered by the sources

  • Exact usable viewfinder AF-point pattern and corner AF behavior were not established.
  • Electronic manual focusing needs camera power; post-One-Shot adjustment also requires the 90D Lens electronic MF setting to be enabled and the shutter held halfway (lens ENG-6; body p.266).
  • No movie autofocus or stabilization-performance claim is made.
Sources and review notes

Firmware in scope: camera 1.1.0 or later (cited guide scope), lens not stated, adapter not stated. “Not stated” means the documents do not give a version range. It does not mean every version works.

Researched 2026-09-07 by an AI research agent reading the documents below, then source-checked 2026-09-07. Nobody has tested this pair by hand. How the research works

  • EOS 90D Advanced User Guide (eos90d-ug5-en.pdf) — Cover; printed pp. 54–55, 114–115, 124–126, 135–143, 158–159, 202–203, 266. Current download resolved from Canon India support issue 0303714001. Downloaded and text-read on the research date. The guide explicitly covers camera firmware 1.1.0 or later; that is documentary scope, not a claim that 1.1.0 first enabled ordinary lens operation. Lens-specific usable AF-point counts were not established. Accessed 2026-09-07.
  • EF-S10-18mm f/4.5-5.6 IS STM Instructions — Printed ENG-1, ENG-6, ENG-8, ENG-11; PDF pp. 2, 7, 9, 12. Exact STM lens manual downloaded through Canon Taiwan support issue 0301542501. Its old camera list is dated March 2014; the later 90D body manual supplies EF-S acceptance. The four-stop IS figure uses EOS 7D, not 90D, and is not transferred here. Accessed 2026-09-07.

Related rules: Native EF and EF-S mounting on these Canon DSLRs →

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Canon EOS 90D

Canon EF-S mount · APS-C sensor

All lenses that fit this camera

Canon EF-S 10-18mm f/4.5-5.6 IS STM

Canon EF-S mount · APS-C coverage · 10–18mm · f/4.5–5.6

All cameras this lens fits

Manufacturer references

Where the facts on this page come from. Last checked September 7, 2026.

  1. Canon EOS 90D — official specificationsManufacturer specification page used to verify camera model, lens mount and sensor format.
  2. Canon EF-S 10-18mm f/4.5-5.6 IS STM — official product informationManufacturer product page or manual used to verify lens identity, focal length, maximum aperture and format.
  3. Canon lens compatibility guideOfficial system matrix for RF, RF-S, EF and EF-S. Canon EF-S lenses do not fit full-frame EF DSLRs; RF lenses do not fit DSLRs.
  4. Canon EOS R5 manual: still-photo croppingRF-S and adapted EF-S lenses automatically select the 1.6x APS-C image area on this full-frame RF body; fewer pixels are recorded.
  5. Canon manual: attaching EF and EF-S lensesEF and EF-S lenses require the optional Mount Adapter EF-EOS R to attach to an RF body.

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