Originally Posted by smoker
I just used 99% IPA and 100% cotton cotton buds. Clean in a series of strokes in the same direction. Got the advice from a mate who astro-modifies cameras for a living. Stop the lens right down and take a shot of the sky to check for dust bunnies.
I read somewhere that's what the Canon service centre do too. But they dint acknowledge it, in case they have hundreds of customers with a claim, in case they fuck up their sensor.
BTW... I had to google IPA.. I was wondering why you were rubbing beer on your cameras most intimate bits