1) How often do you all clean the lens and camera sensor?
Len interior - Never(I don't know how to do it anyway) , unless I see fungus or dirt and it is appearing in my photos.
Lens exterior - As and when it is dirty
Sensor - As and when it is dirty
2) What do you all use to clean them? Lenspen?
Exterior Lens surface - Blower, Lenspen, lens tissue. When I am desperate - T-shirt :sweatsm: