Set of 2 Solar Photography Filters & Solar Eclipse Glasses Hardly used. Please note that the items have been opened. The solar photography filter is used by holding it in front of the lens. It can be used even with cameras that don't have filter threads. It's necessary when photographing the sun without overexposure. Please refer to the attached photos for details. Since these are used items, please refrain from purchasing if you are concerned about scratches, marks, dust, etc., or if you are overly sensitive to such things.