Use the computer can of air to de-dust the small apeture of a lens?

[sir pball]

9. No!

I would never use canned air on my gear - besides the pressure bending the diaphragm leaves or worse, it's going to drive any dust deeper into the lens instead of extracting it, roughening up the mechanism or worse getting on the internal optics. Vacuuming is a much better option...I'm a little reckless (well, a lot...I cleaned the sensor on my D70 by shoving the hose in the lens mount hole) so I just use the upholstery brush attachment on a regular vac, but if you're picky you can get a specialized electronics vac on Amazon.

That being said, the Rocket alfredo mentioned above is useful as all getout to have around, it won't actually pull dust away like a vac but you can puff as delicately as you need to knock pesky grains off of sensors and whatnot. Or go really oldschool and get a camel hair brush..