It's a bird

by Vian Esterhuizen

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Cleaning a sensor is not easily done, and requires [expensive] professional service. It definitely cannot be done safely with canned air, lens brush or similar tool. As @Jerry Dallmann states, pure water from condensation is, in itself fairly innocuous. However, as it forms droplets on the sensor and lens, any random dirt specks are pushed into more obvious ...


3

I will answer based on my background as an electrcal engineer since the sensor and at least part of the autofucus system are electronics. Pure water, as a general rule, is not harmful to most types of electronics. However if the water has any impurities in it, it can cause corrosion which is harmful. It doesn't take much in the way of dust, minerals, ...



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