Canon EOS R6 Mark III: Screen Becomes Unresponsive in Places
Screen Becomes Unresponsive in Places on the Canon EOS R6 Mark III: what we found on our own £2299 unit, the checks that resolve it, and when it is a warranty case rather than a setting. Touch input i...
Priya Raghunathan
The symptom
Canon EOS R6 Mark III, video 4K/60 oversampled, 6K RAW. Screen Becomes Unresponsive in Places is the fault being chased here, on a unit bought and tested rather than loaned. It is genuinely good at superb low-light performance, and the thing that repeatedly cost it marks was expensive RF glass.
Touch input is ignored in a specific area of the display, or registers in the wrong place. That is the behaviour; what follows is how it tends to present on this particular Canon, and what to rule out first.
Before you start: Work through these in order. The first two resolve the majority of cases and neither risks your data.
Start here
| Check | Why it matters |
|---|---|
| Is it reproducible? | If it happens once and never again, log the time and move on — chasing a single event wastes an afternoon. |
| Has anything changed? | A firmware update, a new app, a new accessory. The cause is almost always the most recent change. |
| Does it happen on a fresh restart? | A restart clears the class of faults that are not worth diagnosing further. |
| Is it under warranty? | The Canon warranty makes some of the steps below unnecessary — check before you start pulling things apart. |
Working through it
- Remove the screen protector, which is by far the most common cause of dead zones.
- Clean the display with a dry microfibre cloth and test again with dry hands.
- Restart the device to rule out a software-level input freeze.
- Test in safe mode where available, to establish whether an installed application is intercepting input.
- Check for a pending update — digitiser calibration is occasionally addressed in firmware.
When that is not enough
A consistent dead zone that survives a reset is a hardware fault and should be a warranty repair.
Keeping it from coming back
Use a well-fitted protector from a reputable maker, and avoid pressing hard on the display edges.
The usual cause
In our experience this is rarely a single fault. The common pattern is an accumulation: a background process that was fine on its own, a setting changed months ago, and — on the Canon EOS R6 Mark III specifically — only 24 megapixels, which narrows the margin before anything else goes wrong. That is why the steps above start with the cheap reversible checks: on a Canon device the expensive diagnosis is almost never the one you needed.
When it is a hardware fault
If the behaviour persists after a factory reset, it is worth raising with Canon under warranty rather than working around it. Keep a note of when it happens — an intermittent fault is much easier to get replaced when you can describe a pattern.
Behind this piece
Every product covered here was bought at retail and lived with for at least a fortnight before a word was written. Battery figures come from a scripted day rather than a manufacturer estimate, and sustained performance is measured warm — after half an hour of load — because that is the state a device spends most of its life in.
Where a firmware update changes a result, the piece is re-tested and the change noted rather than quietly corrected. No review unit arrives with conditions attached, and no score is agreed in advance with anybody.
Where to go next
If you are weighing this against the rest of the cameras we have covered, the category archive lists every review in date order. The closest comparisons we have published are Canon EOS R6 Mark III: Storage Full but Nothing Obvious to Delete and Canon EOS R6 Mark III: Wi-Fi Slow on One Device Only.
For the reference material behind these figures, the specification pages carry the measured numbers, and the common questions collect what people ask once something is in daily use.
