Remove loose dust from a Sony interchangeable-lens camera sensor
Use the camera’s cleaning function first, work mount-down with a plain hand blower, verify at f/11, and stop before wet or contact cleaning.
Direct answer
The shortest reliable path.
Use the Sony model’s built-in image-sensor cleaning function first. If spots remain, work in a dust-free room with the camera powered as the model manual directs, remove the lens, hold the mount slightly downward, and use a plain hand-squeezed blower without touching the sensor. Never use compressed air or an air duster. Reattach the lens and photograph an evenly lit white surface at f/11 to check. If spots remain or contact cleaning is required, use professional service.
System view
Check the whole path.
- 01Repeatable image spot
- 02Model-specific cleaning function
- 03Dust-free lens removal
- 04Plain hand blower with mount down
- 05f/11 verification image or service
Scope before steps.
Supported Sony interchangeable-lens cameras and camcorders with visible dust spots that remain after the model’s automatic sensor-cleaning function.
Wet sensor swabs, cleaning behind optical assemblies, fungus, scratches, fixed-lens cameras, A-mount translucent-mirror manipulation, or a model whose manual specifies a different process.
Procedure
Do this in order.
- 01
Prove the spot is in the image path
Photograph a white wall, white paper, or clear sky in Aperture Priority at f/11 and compare several frames for spots fixed in the same place.
- 02
Run the camera cleaning function
Use the image-sensor cleaning command and power sequence described in the exact model’s Help Guide before removing the lens.
- 03
Clean the exterior first
Brush loose dust from the body and use the blower on the lens exterior before exposing the lens mount.
- 04
Blow loose dust downward and away
In the dust-free area, detach the lens as the manual directs, tilt the mount slightly downward, and gently use the plain blower without inserting its tip or touching the sensor.
- 05
Close and verify
Reattach the lens promptly, repeat the f/11 white-surface test, and compare the spot pattern with the original frames.
Diagnostic matrix
Read the result, not the guess.
| What you see | Check next | What it means |
|---|---|---|
| Spot moves when a different lens is used | Inspect and clean the lens surfaces before reopening the camera. | The contamination may be on the lens rather than the sensor. |
| Spot remains fixed after automatic cleaning | Proceed only to Sony’s non-contact hand-blower step for the exact model. | Loose sensor dust is still plausible, but contact cleaning is not authorized by this guide. |
| Blower step removes the spot | Reattach caps and adopt Sony’s dust-prevention lens-change practice. | The non-contact cleaning path succeeded. |
| Spot remains or looks like a smear | Stop and arrange professional sensor cleaning or Sony repair. | It may require contact cleaning or repair beyond safe loose-dust removal. |
Stop conditions
Know when not to keep changing things.
- Do not touch the sensor, use compressed air, blow with your mouth, or apply liquid, swabs, paper, or brushes under this procedure.
- Stop if the model manual does not expose the sensor safely, the shutter or mirror position is unclear, or the battery is low.
- Use professional service when spots persist, the sensor appears smeared or scratched, or debris is inside the lens.