Quote Originally Posted by Tim


Glass is a pretty hard material, but dust can scratch it if it is on the lens and is wiped with a lens cloth, I can't imagine a brush scratching a lens, and I would doubt a brush would be able to make dust scratch it also.
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Ditto on that point. It's the lens coating that gets scratched anyway. Consider how many times we all clean mirrors and windows with windex and a paper towel. I can't say that I've ever caused scatches in glass around the house...oh crap, I'd better take a closer look