DeadPixelDevice.pro

Canon Camera Dead Pixel Guide

EOS R5 · R6 Mark II · R7 · R8 · 5D Mark III · 6D — sensor dead pixels

🟢 LIKELY COVERED

Canon covers sensor dead pixels under the 1-year limited warranty for manufacturing defects. Try the in-camera Pixel Mapping tool first — it resolves most hot pixel issues without a service visit.

Act within: Run Pixel Mapping first, then contact Canon service if defects persist

Contact: Canon support at canon.com/support or nearest authorised service centre

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How to test Canon Camera for dead pixels

Sensor dead pixels appear in your photos, not on the camera's LCD screen. To test: fit the lens cap, set the camera to Manual mode at F/8, ISO 100, shutter speed 2 seconds, and take a shot in a dark room. Open the RAW file at 100% zoom in Lightroom or Digital Photo Professional (DPP) and look for fixed bright or dark dots.

Repeat the test at ISO 3200 with the same settings. Compare the two shots: dots that appear only at ISO 3200 are hot pixels (temperature-related, resolved by pixel mapping). Dots visible at both ISO 100 and ISO 3200 are confirmed dead pixels.

Always test in RAW — Canon's in-camera JPEG processing applies noise reduction that can hide hot pixels in JPEG output.

For the full testing methodology, see the camera sensor dead pixel guide.

What a dead pixel looks like on Canon Camera

On Canon mirrorless sensors (EOS R series), a dead pixel appears as a fixed bright white, red, green, or blue dot in the same position in every photo — independent of what you're shooting, your exposure settings, or ISO.

  • Canon EOS R5 / R5 Mark II (45MP full-frame) — Individual pixels are ~4.4µm. Dead pixels appear as very small but sharp dots. Most visible on plain backgrounds at 100% zoom.
  • Canon EOS R6 Mark II (20MP full-frame) — Larger pixels (~6.4µm) — dead pixel dots are slightly larger and more prominent against uniform backgrounds.
  • Canon EOS R7 (32.5MP APS-C) — Smaller sensor, smaller pixels. Dead pixels are very small but appear clearly at 100% zoom on solid backgrounds.
  • Canon 5D Mark III / 6D (DSLR legacy)— Same appearance. Dead pixels in the 5D Mark III's 22MP sensor have been reported more at long exposures and high ISO; pixel mapping reduces most cases.

Canondead pixel warranty — what's covered

Canon's 1-year limited warranty covers manufacturing defects including sensor dead pixels. Canon does not publish an exact threshold — coverage is assessed case-by-case by Canon service centres, but a cluster of defects or a clearly visible dead pixel in the centre of the frame has a strong case.

  • Premium models (R5, R5 Mark II, R6 Mark II) tend to receive more favourable assessment given the sensor cost.
  • Before submitting a warranty claim, Canon expects you to run Pixel Mapping first. A warranty claim for a defect that Pixel Mapping resolves will typically be declined.
  • Out-of-warranty sensor service: Canon's flat-rate repair pricing varies by region. Contact your nearest Canon authorised service centre for a repair estimate.

How to fix a dead pixel on Canon Camera

Step 1 — Run Pixel Mapping (Canon's built-in fix):

  • Canon EOS R series (R5, R6, R7, R8, R50, R100): Menu → Maintenance → Pixel Mapping. Allow the camera to sit at room temperature for 5 minutes before running this. Battery must be fully charged. The process takes approximately 1 minute.
  • Canon DSLR (5D Mark III, 6D, 7D series): Menu → Setup → Sensor Cleaning → Manual Cleaning, then follow the on-screen Pixel Mapping option.

After running Pixel Mapping, repeat the cap test at ISO 100 and ISO 3200. Most hot pixels will be eliminated. True dead pixels (visible at ISO 100) may persist.

Step 2 — Post-processing: If defects remain, they can be masked in software. See the guide to fix dead pixels in DaVinci Resolve for video work. For stills, use Lightroom's Spot Removal tool, synced across the shoot as a preset.

FAQ

Does Canon's Pixel Mapping actually fix dead pixels?+
No — Pixel Mapping marks the defective photosite in firmware and instructs the camera to interpolate from surrounding pixels during image capture. The photosite itself is not repaired. The result is invisible in most shooting situations, but a true dead pixel remains on the sensor.
My Canon R5 has 2 dead pixels — will Canon cover it under warranty?+
Canon's threshold is not published, but 2 dead pixels is borderline. Run Pixel Mapping first — if both are resolved, the warranty claim is moot. If they persist after Pixel Mapping, contact Canon service with RAW sample files demonstrating the defect at ISO 100. A clear centre-screen defect on a premium body like the R5 has a reasonable chance of coverage.
Dead pixel on Canon R7 vs R5 — is there a warranty difference?+
Both use the same 1-year Canon Limited Warranty. In practice, Canon service centres may exercise more discretion on premium body (R5, R5 Mark II) claims given the higher sensor value. Entry models (R7, R8) receive the same formal warranty terms but may receive less flexible treatment for borderline cases.
Can I fix a Canon sensor dead pixel in Lightroom?+
Yes — for still photography, use Lightroom's Spot Removal tool (Heal mode) at 100% zoom on the exact pixel position. You can save this as a Develop preset and sync it across all files from a shoot so the mask is applied automatically. For video, DaVinci Resolve's tracker-based fix is more suitable.