I keep getting dust on the sensor, even after a sensor clean at the service centre. Do zoom lenses make it worse?

John Temprell, Cambridgeshire

Brian Says… When zoom lenses are used in a dusty environment, they can speed up the rate that dust gets on the sensor. I suggest you ask the service team to replace the dust trap at the bottom of the sensor in the mirror box. It might be that it’s no longer trapping dust as it should.

your image sensor may get dust on it, but it can be cleaned by you or a service centre