how long does it take for the dust to collect in the sensor until u really need to bring it to the service center for a cleaning ?
And to wat extent does changing lenses cause dust to build up ? i.e if u quickly change from one lens to the other in a few seconds for a few times a day, will it translate to a huge build up of dust ??
And to wat extent does changing lenses cause dust to build up ? i.e if u quickly change from one lens to the other in a few seconds for a few times a day, will it translate to a huge build up of dust ??