ecobin wrote:
Yes, try a blower first - the rocket blower is good - don't use canned compressed air as the propellant could damage the sensor. If the dust isn't removed then you'll need to do a wet cleaning - there are several good kits available.
I don't find the rocket blower very affective. Compressed air works better but you need to hold the can at the proper distance and upright to avoid clouding from the propellant.
Sensor swabs are some what affective and outrageously expensive. I've made my own device using eclipse solutions and pec-pads.
I don't look for dust until it shows in my photos.