Many thanks
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davidc wrote:I saw those filtered blowers and I'd question the efficacy that the filter has in real terms.
Though you may get a small volume of cleaner air inside the rocket, a) not all of that air will leave the rocket and b) there is a still the ambient dust in the room which you are still pushing onto the sensor. If dust in the room was so bad that a filter was needed I'm sure we wouldn't be seeing non-filtered dust rockets (otherwise using them would add MORE dust than it removed and the camera manufacturers would advise us not to use them) AND that those with filters could produce statistically significant evidence which would be plastered all over their websites (which it doesn't seem to be!)
I tried my non-filtered blower on a ridiculously dirty sensor and compared the before/after pictures and it made a huge difference, I'd be very interested to see a side-by-side comparison with a filtered one.
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