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Forum: Pentax DSLR Discussion
05-22-2009, 07:45 AM
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No, the better analogy is that you're arguing that speed bumps are perfectly safe for a car, and everyone else is pointing out they'll ruin your shocks if you hit them too fast. Compressed gas is not completely safe and foolproof; it can leave residue if the can isn't carefully positioned. A fact which you called baseless fear mongering. It's not fear mongering; it's fact. You absolutely, positively, must take care when using compressed gases. I'm not seeing why you're getting such a bug in your bum about people saying that you need to be careful when using them to use them properly, and a lot of people don't KNOW that if you tilt your can of compressed air rather than bending the straw around you're likely to shoot a blast of ice crystals directly into your camera and leave streaks that will have to be cleaned off with more invasive methods.
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Forum: Pentax DSLR Discussion
05-21-2009, 12:40 PM
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It's very unlikely to damage your sensor beyond anything a wet cleaning can't fix, but if you hold any compressed gas with a propellant at too steep of an angle (or god forbid upside down) you can easily see the plume of condensation coming out. If you spray that directly on your arm, it's cold enough to cause skin damage. Spraying those icicle droplets directly onto the sensor is likely to leave watermarks. Yes, I acknowledge that's a warning against improper use, but some people don't know that it IS improper use.
Do me a favor Wheatfield, before you say it's impossible, flip a can of Dust Off over and, while upside down, spray it against a clean glass and look for condensation spots. Or, if you're up for fun, spray it against your arm upside for a couple seconds and see if it's unpleasant....
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