I found my father's old camera,lenses and filters, and noticed that fungus was growing on the lenses and filters(quite disgusting )...I know that I cant do anything about the fungus in the lenses.What is the proper way to clean the fungus? I know it sounds stupid,but the fungus looks like its quite hard to clean off...Im new to this,so I know little about cleaning and this photography stuff,so someone please help...Thank You