Cleaning an RX100 with a lenspen?
I just did clean my rx100 with lens pen last week aftet o got buch of tiny water drops on it from taking pics of fountain... I thing you are complicating things little too much as far as curvature of lens or pen... My pen looks a little like contact lens ( thr way its curved) cleaned rx100 lens no problem.
I have a black and red one from lenspen manufacturer and its couple years old...
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