I am a photographer and had on a shoot lost the back cover of one of my lenses. One thing was clear: I needed a new immediately, and it should be a Canon, I had already made with plagiarism very bad Erfshrungen. To be honest I had to have expected to pay a small fortune and was pleasantly surprised by the low price and had to check immediately whether it is the Richigen. It does this, the E-back cover is the standard rear cover of the EF bayonet, which is already included with the lens in the delivery.