How to clean and maintain your camera and lenses

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When changing the lens, if dust or debris gets inside the camera and adheres to the surface of the image sensor (the part that acts as the film), some dark spots may appear on the image (see below pictures), depending on the shooting environment.

Before cleaning

After cleaning

Your camera is equipped with the anti-dust vibration function to prevent dust from adhering to the image sensor. If dust or debris remains, however, clean the image sensor by using the procedure detailed in the below video.

Items required

Brush for camera cleaning

Blower for camera cleaning

Cleaning the image sensor


  • Cleaning can be performed only when the remaining battery icon shows three marks or more. Use an AC Adaptor AC-PW20 (sold separately) or fully charged battery.
  • Do not use a spray blower, because it may scatter water droplets inside the camera body.
  • Do not put the tip of a blower into the cavity beyond the mount, so that the tip of the blower does not touch the image sensor.
  • Hold the camera's face downward to prevent the dust from resettling in the camera.
  • Do not apply a mechanical shock to the camera during cleaning.
  • Take extreme care not to scratch the image sensor. If it is scratched or damaged, the repair will be at your expense.

After cleaning

Confirm that the dust has been removed by cleaning

Set the camera to the aperture priority mode, set the F-value to around F11, and shoot a white wall, sheet, or clear blue sky.

Check the recorded image and confirm no dust remains in the area where it used to be.
If it still remains, contact your Sony dealer or local authorized Sony service facility.

How to clean and maintain your camera body and lenses

Cleaning your camera body and lenses is essential to keep your equipment in good condition, but it is also a delicate procedure. That is why the best way to keep them in good condition is to look after them carefully:

  • Always replace the lens caps.
  • Keep your lenses in a protective case.
  • Carry your camera equipment in an appropriate bag.

You can find accessories here .

Some condensation may also appear if you are in a very humid location or if you move from a cold to a warm place. This condensation may lead to the oxidation of some of the metal parts inside the body, resulting in malfunctions. In addition, fungal and mould growth may develop and damage your equipment. To reduce this risk, it may be wise to keep sachets of silica gel in your carrying case. The silica gel will help absorb some of the moisture.

When handling your equipment, dust or other solid particles can lodge themselves in your camera body and on your lenses; fingerprints may also appear. Here is how to remove these without damaging your equipment.

  1. Camera body

    After a day at the beach, for example, grains of sand may lodge themselves in the crevices of the camera body. If they are not removed straight away, they may work their way into the adjustment dials, resulting in premature wear that will make your camera unusable. They can also harm the focus rings of your lens, seriously damaging it.

    The simplest solution for removing the particles is to brush the outside of the body using a soft-haired brush. Do not press hard as this will scratch the body or the LCD screen.

    A cotton swab may also be used if adhesive dust cannot be removed with a brush. A blowing ball is often effective for hard-to-reach places.

    Finally, if the camera body is soiled with harder-to-remove substances (mud, etc.), a microfibre cloth (easily obtainable from an optician), slightly dampened with water, will be perfectly adequate. Microfibre is recommended as this will not scratch the LCD screen.

    Do not use any chemical products such as thinners, benzine, alcohol, disposable cleaning wipes etc.
  2. Lenses

    Lenses need to be treated with particular care. The glass that makes up the lenses is very fragile and can scratch very easily. A lens should only be cleaned as a last resort. The optical surface is affected each time it is cleaned. Marks are always left, even if they are not immediately obvious to the naked eye. It is better to have a lens that is slightly dusty than a lens that is scratched.

    In our view, cleaning is essential if you notice fingerprints; by their nature these are oily and acidic, and can damage the anti-reflection coating of the lens. Dried water droplets and sea spray contain salt crystals that may also damage the glass and must be removed.

Removing dust and microparticles

First, use a blowing ball to remove most of the dust. Never blow with your mouth. Doing this results in particles of saliva on the lens which leave marks that are hard to remove.

Next, use a very soft-haired brush to remove the dust on the lens. Do not touch the hairs of the brush with your fingers as this will make the hairs oily and will result in smears. Do not press too hard. After a day at the beach, for example, microparticles of quartz or silica may be resting on the glass of your lens and improper cleaning may scratch the optical surface.

Removing oily smears and fingerprints

As a general rule, avoid touching the glass with your fingers. If fingerprints are present on the glass, never remove them using your clothes or tissue. Their fibres are too coarse and may scratch the glass.

  • Use a microfibre cloth and keep it in a bag or your carrying case to prevent it from getting dusty.
  • If you need to use a liquid to remove oily smears, do not use tap water as the salts in this may scratch the glass.
  • Instead, wet your microfibre cloth in deionised water and, without rubbing, dab the surface of the glass.


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