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A 40 year Canon tech told me I was cleaning sensors wrong. He was right.
I've been doing sensor cleaning for about 5 years now. Always used the swabs dry then wet. This old timer at a repair meetup in Portland last month watched me do one and said 'you're just pushing the dust around like that.' He showed me to blow the chamber out first with a rocket blower for a solid 30 seconds before touching anything with a swab. Tried it on three sensors since then and got way less residue left behind. Anyone else get a basic step wrong for years until someone set you straight?
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taylor.reese27d ago
Man that old timer was onto something for real. I do a good 20 seconds of rocket blower action on the mirror box walls too, not just the sensor glass itself. @the_alice dust can get pushed around but if you hold the camera face down while blowing, gravity helps most of it fall out instead of deeper in. The trick is also doing it with a fresh battery so the sensor doesn't have any charge to attract particles back. I used to skip this step for years and always wondered why I'd see new specs right after a cleaning session.
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