Cheaper than Dust-Aid, and Artic Butterfly?

Dust is weird. Some days my sensor seems covered by tiny specks which have to be cloned out of skies, but then a day later, the sensor cleaner seems to have done its job and the specks have become dislodged.

I leave the cleaning device switched on at all times and vigorously use the blower on my lenses every time I change them.

The problem is really only noticeable, I find, when there are large areas of sky in a shot.

It was even a problem in the 1920's, Man Ray had trouble with dust but managed to produce many amazing images.

For helpful advice and quality products try here: http://www.cameraclean.co.uk/index.php

Cannot recommend them too highly. Helped me overcome my OCD regarding sensor dust and taught me how to remove it safely when absolutely necessary.

In case your wondering, I'm merely a satsified customer and have no other form of connection with the company or its proprietors.