Do you use a lens cloth, a tissue (not bathroom) or your shirt tail (hopefully not) to clean your glass elements, filters, EVF diopters, etc.? And if it’s a lens cloth, what is your method to safely clean that cloth to keep possible contaminants or micro-abrasives in cleaning agents from potentially re-crystalizing and scratching your glass? Finally, other than when it’s obvious, how often do you clean it to prevent any micro-grit buildup from dust, dirt, etc. from exposure of frequent use? Thanks.