Hi there, I am just starting to get a little more seriously into photography and am finding I'm having serious problems trying to keep my equipment clean and free of dust. Was hoping someone might be able to give me some tips that might help with this. I am shooting mainly outdoors/landscape type stuff with a Canon 10D using a few different lenses and typically either a polarizer or graduated grey filters (I transport and store my equipment in a Loweprow NatureTrekker backpack). I seem to be spending more time trying to clean dust from my equipment and figuring out whether dust specs are in my camera body, on the lenses or on the filters than I am actually setting up and taking pictures !!