Out, damned spot!
Tackle dust and more stubborn spots with specialist equipment
01 Check power levels
Before you start to clean the sensor, you’ll need to make sure the battery is fully charged, otherwise the menu option listed in the next step may not be available. You’ll also need to be in a location that’s as free of dust as possible. Remove the lens and switch the camera on.
02 Lock up the mirror
Usually the mirror is in the way of the sensor, but there’s an option in the menus that’s designed to lock the mirror up for cleaning (not to be confused with the Mirror Up (MUP) release mode on some Nikons). Press the MENU button, then select ‘Lock mirror up for cleaning’ in the Setup menu.
03 Use a sensor loupe
To reveal the sensor, press the shutter release to raise the mirror and open the shutter curtains. You can now inspect the surface of the sensor for debris or dust spots. To make this easier, use the sensor loupe – this fits over the lens mount and has a magnifying eyepiece and built-in lamp.
04 Blow first
If you spot loose dust particles, hold the camera with the lens mount pointing downwards and use a few blasts from a hand blower to remove them, then check the sensor again. If any particles still appear to be stuck to the sensor, it’s time to unleash the SensorKlear pen.
05 Touching up
Blow on the SensorKlear pen’s tip before manoeuvring it through an opening in the side of the loupe and dabbing away all the spots of debris. You can rotate the loupe to give you better access to tricky-to-reach areas. It only takes a few moments, and it’s so easy.
Switch off the lights on the loupe and remove it from the lens mount, then hold the camera pointing downwards and switch it off. Reattach the lens, and take a test shot using a fairly small aperture, such as f/16, magnifying the image during playback to check for dust.